======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= EXT4-fs: Ignoring removed i_version option Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 6018 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:bio_get_first_bvec block/blk-merge.c:22 [inline] RIP: 0010:bio_get_last_bvec block/blk-merge.c:30 [inline] RIP: 0010:bio_seg_gap+0x1c6/0x7d0 block/blk-merge.c:743 Code: fd 48 ba 00 00 00 00 00 fc ff df 49 8b 06 48 89 5c 24 20 49 89 de 49 c1 e6 04 48 89 44 24 08 4a 8d 2c 30 48 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 ef e8 0c 33 b9 fd 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc90003036a60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880788e5b80 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880786a1030 RBP: 0000000000000000 R08: ffff888141f6d877 R09: 1ffff110283edb0e R10: dffffc0000000000 R11: ffffed10283edb0f R12: 0000000000000400 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880786a1000 FS: 0000555589f40500(0000) GS:ffff888125ecd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe080ddae9c CR3: 00000000745c6000 CR4: 00000000003526f0 Call Trace: bio_attempt_back_merge+0x4ba/0x920 block/blk-merge.c:940 blk_attempt_plug_merge+0x145/0x1d0 block/blk-merge.c:1073 blk_mq_attempt_bio_merge block/blk-mq.c:3022 [inline] blk_mq_submit_bio+0x1abd/0x26d0 block/blk-mq.c:3186 __submit_bio+0x207/0x5a0 block/blk-core.c:637 __submit_bio_noacct_mq block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x2fb/0xa50 block/blk-core.c:755 submit_bio_wait+0x104/0x200 block/bio.c:1389 blkdev_issue_discard+0x113/0x1b0 block/blk-lib.c:95 ext4_mb_clear_bb fs/ext4/mballoc.c:6620 [inline] ext4_free_blocks+0xce2/0x1bf0 fs/ext4/mballoc.c:6770 ext4_clear_blocks+0x372/0x3f0 fs/ext4/indirect.c:888 ext4_free_data fs/ext4/indirect.c:962 [inline] ext4_ind_truncate+0x701/0xb30 fs/ext4/indirect.c:1154 ext4_truncate+0xb24/0x12e0 fs/ext4/inode.c:4620 ext4_evict_inode+0x86e/0xe80 fs/ext4/inode.c:260 evict+0x5f4/0xae0 fs/inode.c:837 ext4_orphan_cleanup+0xc20/0x1460 fs/ext4/orphan.c:470 __ext4_fill_super fs/ext4/super.c:5618 [inline] ext4_fill_super+0x5920/0x61e0 fs/ext4/super.c:5737 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1697 vfs_get_tree+0x92/0x2b0 fs/super.c:1757 fc_mount fs/namespace.c:1198 [inline] do_new_mount_fc fs/namespace.c:3641 [inline] do_new_mount+0x302/0xa10 fs/namespace.c:3717 do_mount fs/namespace.c:4040 [inline] __do_sys_mount fs/namespace.c:4228 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4205 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f74a6990e6a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd3db28e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffd3db28ea0 RCX: 00007f74a6990e6a RDX: 0000200000000ac0 RSI: 0000200000000240 RDI: 00007ffd3db28e60 RBP: 0000200000000ac0 R08: 00007ffd3db28ea0 R09: 0000000003810744 R10: 0000000003810744 R11: 0000000000000246 R12: 0000200000000240 R13: 00007ffd3db28e60 R14: 0000000000000453 R15: 000000000000002c Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bio_get_first_bvec block/blk-merge.c:22 [inline] RIP: 0010:bio_get_last_bvec block/blk-merge.c:30 [inline] RIP: 0010:bio_seg_gap+0x1c6/0x7d0 block/blk-merge.c:743 Code: fd 48 ba 00 00 00 00 00 fc ff df 49 8b 06 48 89 5c 24 20 49 89 de 49 c1 e6 04 48 89 44 24 08 4a 8d 2c 30 48 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 48 89 ef e8 0c 33 b9 fd 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc90003036a60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880788e5b80 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880786a1030 RBP: 0000000000000000 R08: ffff888141f6d877 R09: 1ffff110283edb0e R10: dffffc0000000000 R11: ffffed10283edb0f R12: 0000000000000400 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880786a1000 FS: 0000555589f40500(0000) GS:ffff888125ecd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe080ddae9c CR3: 00000000745c6000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: fd std 1: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 8: fc ff df b: 49 8b 06 mov (%r14),%rax e: 48 89 5c 24 20 mov %rbx,0x20(%rsp) 13: 49 89 de mov %rbx,%r14 16: 49 c1 e6 04 shl $0x4,%r14 1a: 48 89 44 24 08 mov %rax,0x8(%rsp) 1f: 4a 8d 2c 30 lea (%rax,%r14,1),%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction 2e: 74 12 je 0x42 30: 48 89 ef mov %rbp,%rdi 33: e8 0c 33 b9 fd call 0xfdb93344 38: 48 rex.W 39: ba 00 00 00 00 mov $0x0,%edx 3e: 00 fc add %bh,%ah