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KASAN: use-after-free Read in f2fs_truncate_data_blocks_range

Status: upstream: reported C repro on 2025/08/28 23:47
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+eada39e046837f7eca5d@syzkaller.appspotmail.com
First crash: 161d, last: 3d16h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/08/29 lts (merge base) c79648372d02 C [report] KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/08/29 upstream (ToT) 07d9df80082b C Didn't crash
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range 19 C error error 8 32d 1001d 0/2 upstream: reported C repro on 2023/05/12 18:24
android-54 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range 19 C 3 286d 1001d 0/2 upstream: reported C repro on 2023/05/12 11:37
android-6-1 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range origin:upstream missing-backport 19 C error error 2 64d 1001d 0/2 upstream: reported C repro on 2023/05/12 15:50
upstream KASAN: slab-use-after-free Read in f2fs_truncate_data_blocks_range f2fs 19 C error 1 961d 957d 23/29 fixed on 2023/10/12 12:47
upstream KASAN: slab-out-of-bounds Read in f2fs_truncate_data_blocks_range f2fs 17 1 152d 148d 0/29 auto-obsoleted due to no activity on 2025/12/06 05:03
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/12/08 18:22 9m retest repro android13-5.15-lts report log
2025/09/17 13:33 15m retest repro android13-5.15-lts report log
2025/09/17 13:33 13m retest repro android13-5.15-lts report log
▶ ▼ Fix bisection attempts (3)
Created Duration User Patch Repo Result
2026/01/10 03:02 2h24m bisect fix android13-5.15-lts OK (0) job log log
2025/11/24 16:32 1h18m bisect fix android13-5.15-lts OK (0) job log log
2025/10/24 17:58 1h03m bisect fix android13-5.15-lts OK (0) job log log

Sample crash report:
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
==================================================================
BUG: KASAN: use-after-free in f2fs_truncate_data_blocks_range+0x826/0xeb0 fs/f2fs/file.c:635
Read of size 4 at addr ffff88811e2cd000 by task syz.2.18/379

CPU: 1 PID: 379 Comm: syz.2.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0xf1/0x140 mm/kasan/report.c:444
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 f2fs_truncate_data_blocks_range+0x826/0xeb0 fs/f2fs/file.c:635
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>

Allocated by task 90:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:466
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3245 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260
 kmem_cache_alloc_node include/linux/slab.h:492 [inline]
 __alloc_skb+0xe0/0x740 net/core/skbuff.c:416
 alloc_skb include/linux/skbuff.h:1183 [inline]
 alloc_skb_with_frags+0xa8/0x620 net/core/skbuff.c:6194
 sock_alloc_send_pskb+0x87f/0x9a0 net/core/sock.c:2542
 unix_dgram_sendmsg+0x5f7/0x1890 net/unix/af_unix.c:1816
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 __sys_sendto+0x46d/0x620 net/socket.c:2063
 __do_sys_sendto net/socket.c:2075 [inline]
 __se_sys_sendto net/socket.c:2071 [inline]
 __x64_sys_sendto+0xe5/0x100 net/socket.c:2071
 x64_sys_call+0x178/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 83:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
 slab_free mm/slub.c:3526 [inline]
 kmem_cache_free+0x100/0x320 mm/slub.c:3544
 kfree_skbmem+0x10c/0x180 net/core/skbuff.c:-1
 __kfree_skb net/core/skbuff.c:758 [inline]
 consume_skb+0xb3/0x1f0 net/core/skbuff.c:930
 skb_free_datagram+0x28/0xe0 net/core/datagram.c:325
 __unix_dgram_recvmsg+0x9ff/0xd90 net/unix/af_unix.c:2402
 unix_dgram_recvmsg+0xc2/0xe0 net/unix/af_unix.c:2420
 sock_recvmsg_nosec net/socket.c:966 [inline]
 sock_recvmsg net/socket.c:984 [inline]
 sock_read_iter+0x2b8/0x380 net/socket.c:1057
 call_read_iter include/linux/fs.h:2206 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0x6c9/0xc40 fs/read_write.c:485
 ksys_read+0x149/0x250 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:631
 x64_sys_call+0x96d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff88811e2cd000
 which belongs to the cache skbuff_head_cache of size 248
The buggy address is located 0 bytes inside of
 248-byte region [ffff88811e2cd000, ffff88811e2cd0f8)
The buggy address belongs to the page:
page:ffffea000478b340 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e2cd
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 0000000000000000 dead000000000122 ffff8881081abb00
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 90, ts 38628121312, free_ts 25695938802
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x2d3a/0x2dc0 mm/page_alloc.c:4485
 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5808
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa1/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x381/0x810 mm/slub.c:3033
 __slab_alloc+0x49/0x90 mm/slub.c:3120
 slab_alloc_node mm/slub.c:3211 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0x138/0x260 mm/slub.c:3260
 kmem_cache_alloc_node include/linux/slab.h:492 [inline]
 __alloc_skb+0xe0/0x740 net/core/skbuff.c:416
 alloc_skb include/linux/skbuff.h:1183 [inline]
 alloc_skb_with_frags+0xa8/0x620 net/core/skbuff.c:6194
 sock_alloc_send_pskb+0x87f/0x9a0 net/core/sock.c:2542
 unix_dgram_sendmsg+0x5f7/0x1890 net/unix/af_unix.c:1816
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 __sys_sendto+0x46d/0x620 net/socket.c:2063
 __do_sys_sendto net/socket.c:2075 [inline]
 __se_sys_sendto net/socket.c:2071 [inline]
 __x64_sys_sendto+0xe5/0x100 net/socket.c:2071
 x64_sys_call+0x178/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x542/0x550 mm/page_alloc.c:3534
 free_unref_page+0xae/0x540 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x6c/0x100 mm/page_alloc.c:5884
 __vunmap+0x86d/0xa00 mm/vmalloc.c:2660
 __vfree mm/vmalloc.c:2709 [inline]
 vfree+0x8b/0xc0 mm/vmalloc.c:2740
 kcov_put kernel/kcov.c:417 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:519
 __fput+0x20b/0x8b0 fs/file_table.c:311
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa9e/0x27e0 kernel/exit.c:889
 do_group_exit+0x141/0x310 kernel/exit.c:1003
 get_signal+0x66a/0x1480 kernel/signal.c:2907
 arch_do_signal_or_restart+0xdf/0x11c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307

Memory state around the buggy address:
 ffff88811e2ccf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88811e2ccf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88811e2cd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88811e2cd080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
 ffff88811e2cd100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
==================================================================
F2FS-fs (loop2): access invalid blkaddr:528724992
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:83
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4223664355
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:208729216
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:74
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:2217015408
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:77
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294901760
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294901760
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:77
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:128
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:527928320
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:527928320
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:768
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:1
CPU: 0 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:90
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4169138403
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:300939264
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:83
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4223664355
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:208729216
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 1 PID: 379 Comm: syz.2.18 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 f2fs_is_valid_blkaddr+0xca0/0x12a0 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67c/0xeb0 fs/f2fs/file.c:653
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:692
 truncate_dnode fs/f2fs/node.c:950 [inline]
 f2fs_truncate_inode_blocks+0x64c/0xfa0 fs/f2fs/node.c:1169
 f2fs_do_truncate_blocks+0x833/0xb70 fs/f2fs/file.c:781
 f2fs_truncate_blocks+0x10e/0x300 fs/f2fs/file.c:809
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:861
 f2fs_setattr+0xaca/0x11b0 fs/f2fs/file.c:1039
 notify_change+0xbca/0xe90 fs/attr.c:505
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3273 [inline]
 do_open fs/namei.c:3620 [inline]
 path_openat+0x2895/0x2f20 fs/namei.c:3750
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_open fs/open.c:1260 [inline]
 __se_sys_open fs/open.c:1256 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1256
 x64_sys_call+0x3fc/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f69d3888eb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc22e294d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f69d3b03fa0 RCX: 00007f69d3888eb9
RDX: 0000000000000006 RSI: 000000000014927e RDI: 00002000000000c0
RBP: 00007f69d38f6c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f69d3b03fac R14: 00007f69d3b03fa0 R15: 00007f69d3b03fa0
 </TASK>
F2FS-fs (loop2): Inconsistent i_blocks, ino:7, iblocks:0, sectors:32
F2FS-fs (loop2): dec_valid_node_count: inconsistent i_blocks, ino:7, iblocks:0

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/03 04:57 android13-5.15-lts 7e1070528954 d78927dd .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/08/29 00:02 android13-5.15-lts f32b52534f1d d401b9d7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/08/28 23:44 android13-5.15-lts f32b52534f1d d401b9d7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-15 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/08/28 23:19 android13-5.15-lts f32b52534f1d d401b9d7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
* Struck through repros no longer work on HEAD.