INFO: task syz.3.579:11876 blocked for more than 143 seconds.
Tainted: G W 6.17.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.579 state:D stack:23848 pid:11876 tgid:11875 ppid:8727 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x16f3/0x4c20 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:153
f2fs_issue_checkpoint+0x376/0x570 fs/f2fs/checkpoint.c:-1
f2fs_do_sync_file+0x86c/0x1860 fs/f2fs/file.c:346
f2fs_ioc_commit_atomic_write fs/f2fs/file.c:2378 [inline]
__f2fs_ioctl+0x3ade/0xb6a0 fs/f2fs/file.c:4616
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:598 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ce97aebe9
RSP: 002b:00007f8ce7a0e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8ce99d5fa0 RCX: 00007f8ce97aebe9
RDX: 0000000000000000 RSI: 000000000000f502 RDI: 0000000000000007
RBP: 00007f8ce9831e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ce99d6038 R14: 00007f8ce99d5fa0 R15: 00007ffe4bb51928
INFO: task syz.3.579:11953 blocked for more than 143 seconds.
Tainted: G W 6.17.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.579 state:D stack:26760 pid:11953 tgid:11875 ppid:8727 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x16f3/0x4c20 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
rt_mutex_schedule+0x77/0xf0 kernel/sched/core.c:7339
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
__rt_mutex_slowlock_locked+0x1e04/0x25e0 kernel/locking/rtmutex.c:1760
rt_mutex_slowlock+0xb5/0x160 kernel/locking/rtmutex.c:1800
__rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244
inode_lock include/linux/fs.h:869 [inline]
f2fs_file_write_iter+0x259/0x2400 fs/f2fs/file.c:5200
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5d2/0xb40 fs/read_write.c:686
ksys_write+0x14b/0x260 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ce97aebe9
RSP: 002b:00007f8ce79ed038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8ce99d6090 RCX: 00007f8ce97aebe9
RDX: 0000000000000018 RSI: 0000200000000400 RDI: 0000000000000005
RBP: 00007f8ce9831e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ce99d6128 R14: 00007f8ce99d6090 R15: 00007ffe4bb51928
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 39 Comm: khungtaskd Tainted: G W 6.17.0-rc2-syzkaller #0 PREEMPT_{RT,(full)}
Tainted: [W]=WARN
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:328 [inline]
watchdog+0xf93/0xfe0 kernel/hung_task.c:491
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3fc/0x770 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: 13 Comm: kworker/u8:1 Tainted: G W 6.17.0-rc2-syzkaller #0 PREEMPT_{RT,(full)}
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:-1 [inline]
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:393 [inline]
RIP: 0010:deref_stack_reg+0x81/0x230 arch/x86/kernel/unwind_orc.c:403
Code: 08 4d 8d 77 10 4d 89 f5 49 c1 ed 03 41 80 7c 35 00 00 74 16 4c 89 f7 e8 1d b7 aa 00 4c 8b 04 24 48 be 00 00 00 00 00 fc ff df <4c> 89 74 24 08 4d 8b 77 10 4c 89 fd 48 c1 ed 03 0f b6 44 35 00 84
RSP: 0018:ffffc90000126720 EFLAGS: 00000246
RAX: fffffffffffffff0 RBX: ffffc90000120000 RCX: 0000000000000000
RDX: ffffc90000126888 RSI: dffffc0000000000 RDI: ffffc90000126848
RBP: dffffc0000000000 R08: ffffc90000127e70 R09: 0000000000000000
R10: ffffc90000126898 R11: fffff52000024d15 R12: 1ffff92000024d0a
R13: 1ffff92000024d0b R14: ffffc90000126858 R15: ffffc90000126848
FS: 0000000000000000(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4346b21000 CR3: 00000000285e2000 CR4: 00000000003526f0
Call Trace:
unwind_next_frame+0x17c4/0x2390 arch/x86/kernel/unwind_orc.c:-1
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:243 [inline]
__kasan_slab_free+0x5b/0x80 mm/kasan/common.c:275
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+0x195/0x510 mm/slub.c:4782
bvec_free block/bio.c:169 [inline]
bio_free+0x200/0x2a0 block/bio.c:236
blk_update_request+0x57e/0xe60 block/blk-mq.c:989
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1151
blk_complete_reqs block/blk-mq.c:1226 [inline]
blk_done_softirq+0x107/0x160 block/blk-mq.c:1231
handle_softirqs+0x22c/0x710 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
__local_bh_enable_ip+0x179/0x270 kernel/softirq.c:259
local_bh_enable include/linux/bottom_half.h:33 [inline]
spin_unlock_bh include/linux/spinlock_rt.h:111 [inline]
cfg80211_inform_single_bss_data+0x127b/0x1ab0 net/wireless/scan.c:2395
cfg80211_inform_bss_data+0x1fb/0x3b30 net/wireless/scan.c:3234
cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3325
ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1573 [inline]
ieee80211_ibss_rx_queued_mgmt+0xa36/0x2ae0 net/mac80211/ibss.c:1600
ieee80211_iface_process_skb net/mac80211/iface.c:1699 [inline]
ieee80211_iface_work+0x85f/0x12d0 net/mac80211/iface.c:1753
cfg80211_wiphy_work+0x2bb/0x470 net/wireless/core.c:435
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245