INFO: task syz.7.957:11129 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.957 state:D stack:25256 pid:11129 tgid:11128 ppid:9331 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
__mutex_lock_common kernel/locking/mutex.c:676 [inline]
__mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:760
hfs_find_init+0x184/0x200 fs/hfs/bfind.c:-1
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_extend_file+0x2ee/0x1230 fs/hfs/extent.c:401
hfs_bmap_reserve+0x107/0x430 fs/hfs/btree.c:269
__hfs_ext_write_extent+0x1fa/0x470 fs/hfs/extent.c:121
__hfs_ext_cache_extent+0x6b/0x9b0 fs/hfs/extent.c:174
hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
hfs_extend_file+0x316/0x1230 fs/hfs/extent.c:401
hfs_get_block+0x3d7/0xbd0 fs/hfs/extent.c:353
__block_write_begin_int+0x6b2/0x1900 fs/buffer.c:2145
block_write_begin fs/buffer.c:2256 [inline]
cont_write_begin+0x789/0xb50 fs/buffer.c:2594
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:52
generic_perform_write+0x2c2/0x900 mm/filemap.c:4188
generic_file_write_iter+0x117/0x550 mm/filemap.c:4331
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_pwrite64 fs/read_write.c:793 [inline]
__do_sys_pwrite64 fs/read_write.c:801 [inline]
__se_sys_pwrite64 fs/read_write.c:798 [inline]
__x64_sys_pwrite64+0x193/0x220 fs/read_write.c:798
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: 0033:0x7f611598ebe9
RSP: 002b:00007f6116746038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f6115bb5fa0 RCX: 00007f611598ebe9
RDX: 00000000200000c1 RSI: 00002000000000c0 RDI: 0000000000000006
RBP: 00007f6115a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000009000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6115bb6038 R14: 00007f6115bb5fa0 R15: 00007ffc414c4038
INFO: task syz.7.957:11133 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.957 state:D stack:27568 pid:11133 tgid:11128 ppid:9331 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_write_slowpath+0x872/0xfe0 kernel/locking/rwsem.c:1185
__down_write_common kernel/locking/rwsem.c:1317 [inline]
__down_write kernel/locking/rwsem.c:1326 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
inode_lock include/linux/fs.h:869 [inline]
process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:280
ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:633
security_file_post_open+0xbb/0x290 security/security.c:3199
do_open fs/namei.c:3889 [inline]
path_openat+0x2f26/0x3830 fs/namei.c:4046
do_filp_open+0x1fa/0x410 fs/namei.c:4073
do_sys_openat2+0x121/0x1c0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_open fs/open.c:1458 [inline]
__se_sys_open fs/open.c:1454 [inline]
__x64_sys_open+0x11e/0x150 fs/open.c:1454
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: 0033:0x7f611598ebe9
RSP: 002b:00007f6116725038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f6115bb6090 RCX: 00007f611598ebe9
RDX: 0000000000000000 RSI: 0000000000080242 RDI: 0000200000000040
RBP: 00007f6115a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6115bb6128 R14: 00007f6115bb6090 R15: 00007ffc414c4038
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
watchdog+0xf60/0xfa0 kernel/hung_task.c:495
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13569 Comm: sed Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:find_stack lib/stackdepot.c:601 [inline]
RIP: 0010:stack_depot_save_flags+0x163/0x860 lib/stackdepot.c:668
Code: c8 31 c5 c1 c0 18 29 c5 48 8b 05 d8 3d fd 14 8b 0d ca 3d fd 14 21 e9 48 c1 e1 04 4c 8d 24 08 65 ff 05 e1 5a bf 0d 4c 8b 3c 08 <4d> 39 e7 44 89 2c 24 74 05 45 89 d5 eb 34 45 31 ff e9 85 00 00 00
RSP: 0018:ffffc900044ff008 EFLAGS: 00000282
RAX: ffff88823ae00000 RBX: 0000000000000000 RCX: 0000000000b74850
RDX: 000000000d1ce860 RSI: 0000000000000001 RDI: 0000000056a42348
RBP: 000000002d7b7485 R08: 000000005580dce0 R09: 00000000261908fe
R10: 000000000000000f R11: ffffffff81ad2180 R12: ffff88823b974850
R13: 0000000000000000 R14: ffffc900044ff070 R15: ffff88802382b520
FS: 00007f21267fbc80(0000) GS:ffff8881259ff000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f21269cfa90 CR3: 000000003ca02000 CR4: 00000000003526f0
Call Trace:
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:77
__kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
kasan_save_free_info mm/kasan/kasan.h:406 [inline]
poison_slab_object mm/kasan/common.c:252 [inline]
__kasan_slab_free+0x5b/0x80 mm/kasan/common.c:284
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2417 [inline]
slab_free mm/slub.c:4680 [inline]
kmem_cache_free+0x18f/0x400 mm/slub.c:4782
mt_free_one lib/maple_tree.c:186 [inline]
mas_destroy+0x1680/0x1c70 lib/maple_tree.c:5595
mas_store_prealloc+0xb69/0xf60 lib/maple_tree.c:5512
vma_iter_store_new mm/vma.h:508 [inline]
vma_complete+0x224/0xae0 mm/vma.c:354
__split_vma+0x8a6/0xa00 mm/vma.c:568
split_vma mm/vma.c:598 [inline]
vma_modify+0x13b3/0x1970 mm/vma.c:1631
vma_modify_flags+0x1e8/0x230 mm/vma.c:1649
mprotect_fixup+0x407/0x9c0 mm/mprotect.c:816
do_mprotect_pkey+0x8cd/0xce0 mm/mprotect.c:990
__do_sys_mprotect mm/mprotect.c:1011 [inline]
__se_sys_mprotect mm/mprotect.c:1008 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1008
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: 0033:0x7f2126b922c7
Code: 89 3d fd 3f 01 00 eb 90 0f 1f 00 f7 d8 89 05 f0 3f 01 00 48 c7 c0 ff ff ff ff eb 91 0f 1f 80 00 00 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d c9 3f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffe0e3b5b68 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f2126b66b20 RCX: 00007f2126b922c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007f21268c2000
RBP: 00007ffe0e3b5e30 R08: 0000000000000000 R09: 00007f21268fc2e0
R10: 00007f2126b66b20 R11: 0000000000000206 R12: 0000000000000018
R13: 0000010d42555d5d R14: 0000000000000000 R15: 00007f2126ba6310