INFO: task syz.0.51:6326 blocked in I/O wait for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.51 state:D stack:24824 pid:6326 tgid:6325 ppid:5595 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x16dc/0x5500 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
io_schedule+0x80/0xe0 kernel/sched/core.c:8150
folio_wait_bit_common+0x83c/0xbc0 mm/filemap.c:1324
folio_lock include/linux/pagemap.h:1159 [inline]
release_metapage+0x101/0xa50 fs/jfs/jfs_metapage.c:871
discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
__get_metapage+0x9ac/0xdf0 fs/jfs/jfs_metapage.c:754
dtSearch+0x56c/0x2010 fs/jfs/jfs_dtree.c:621
jfs_lookup+0x1b0/0x420 fs/jfs/namei.c:1464
__lookup_slow+0x1fb/0x2f0 fs/namei.c:1919
lookup_slow+0x53/0x70 fs/namei.c:1936
walk_component fs/namei.c:2282 [inline]
lookup_last fs/namei.c:2789 [inline]
path_lookupat+0x3f5/0x8c0 fs/namei.c:2813
filename_lookup+0x265/0x5d0 fs/namei.c:2842
user_path_at+0x40/0x160 fs/namei.c:3641
do_mount fs/namespace.c:4171 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount+0x2dc/0x420 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd376bcce59
RSP: 002b:00007fd374e26028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd376e45fa0 RCX: 00007fd376bcce59
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000200000000380
RBP: 00007fd376c62e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000041800 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd376e46038 R14: 00007fd376e45fa0 R15: 00007ffcfec1fd88
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xfd7/0x1030 kernel/hung_task.c:561
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10042 Comm: syz.7.396 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:task_on_rq_queued kernel/sched/sched.h:2480 [inline]
RIP: 0010:sched_stop_runnable kernel/sched/sched.h:2841 [inline]
RIP: 0010:pick_task_stop+0x51/0x80 kernel/sched/stop_task.c:37
Code: 74 08 48 89 df e8 ff 7c 90 00 48 8b 1b 48 85 db 74 23 48 8d 7b 35 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 1a 0f b6 4b 35 <31> c0 80 f9 01 48 0f 44 c3 eb 02 31 c0 5b 41 5e e9 9a 21 87 09 cc
RSP: 0018:ffffc900075bf1e0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88801d6b0000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffc900075bf3c0 RDI: ffff88801d6b0035
RBP: dffffc0000000000 R08: ffff88803962dd07 R09: 1ffff110072c5ba0
R10: dffffc0000000000 R11: ffffffff819ddce0 R12: ffffffff8d8c3250
R13: ffffffff8d8c3220 R14: dffffc0000000000 R15: ffff8880b893b8d0
FS: 0000555576b9d500(0000) GS:ffff888126244000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe273295690 CR3: 0000000074b96000 CR4: 00000000003526f0
Call Trace:
__pick_next_task+0x324/0x3c0 kernel/sched/core.c:6154
pick_next_task kernel/sched/core.c:-1 [inline]
__schedule+0x864/0x5500 kernel/sched/core.c:7143
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:mas_is_start lib/maple_tree.c:241 [inline]
RIP: 0010:mas_find_setup lib/maple_tree.c:5340 [inline]
RIP: 0010:mas_find+0x7f8/0xcf0 lib/maple_tree.c:5385
Code: 48 48 8b 6c 24 08 4d 85 e4 74 0a e8 52 24 ab f6 e9 e5 02 00 00 e8 48 24 ab f6 42 0f b6 04 2b 84 c0 0f 85 48 04 00 00 45 8b 27 01 00 00 00 44 89 e6 e8 db 28 ab f6 41 83 fc 01 0f 85 0a 01 00
RSP: 0018:ffffc900075bf560 EFLAGS: 00000293
RAX: ffffffff8b19d113 RBX: 1ffff92000eb7ef9 RCX: ffff88803962dd00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000001b31e23fff R08: ffff88803962dd00 R09: 0000000000000006
R10: 0000000000000100 R11: 0000000000000007 R12: 0000000000000001
R13: dffffc0000000000 R14: ffffc900075bf780 R15: ffffc900075bf7c8
vma_find include/linux/mm.h:1631 [inline]
__mmap_setup mm/vma.c:2428 [inline]
__mmap_region mm/vma.c:2756 [inline]
mmap_region+0x713/0x2310 mm/vma.c:2860
do_mmap+0xc1e/0x10b0 mm/mmap.c:560
vm_mmap_pgoff+0x275/0x4e0 mm/util.c:581
ksys_mmap_pgoff+0x4a6/0x720 mm/mmap.c:606
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe2724ecbc2
Code: 4f 01 00 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 3b 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 6e 5b 5d c3 0f 1f 00 48 c7 c0 e8 ff ff ff 64
RSP: 002b:00007ffc1e2f0e68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000001b31864000 RCX: 00007fe2724ecbc2
RDX: 0000000000000003 RSI: 00000000005c0000 RDI: 0000001b31864000
RBP: 0000000000100001 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000100001 R11: 0000000000000206 R12: 0000000000000032
R13: 00000000000927c0 R14: 000000000003a07a R15: 00007ffc1e2f1140