INFO: task kworker/u4:6:1097 blocked for more than 143 seconds.
Not tainted 6.6.0-rc1-next-20230912-syzkaller-04552-g3c13c772fc23 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:6 state:D stack:24280 pid:1097 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
hfs_find_init+0x17f/0x220 fs/hfs/bfind.c:33
hfs_ext_write_extent+0x18e/0x1f0 fs/hfs/extent.c:141
hfs_write_inode+0xc4/0x9f0 fs/hfs/inode.c:431
write_inode fs/fs-writeback.c:1456 [inline]
__writeback_single_inode+0xa81/0xe70 fs/fs-writeback.c:1668
writeback_sb_inodes+0x599/0x1010 fs/fs-writeback.c:1894
__writeback_inodes_wb+0xff/0x2d0 fs/fs-writeback.c:1965
wb_writeback+0x7f8/0xa90 fs/fs-writeback.c:2072
wb_check_background_flush fs/fs-writeback.c:2142 [inline]
wb_do_writeback fs/fs-writeback.c:2230 [inline]
wb_workfn+0x874/0xfd0 fs/fs-writeback.c:2257
process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
INFO: task syz-executor.0:5473 blocked for more than 143 seconds.
Not tainted 6.6.0-rc1-next-20230912-syzkaller-04552-g3c13c772fc23 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26824 pid:5473 ppid:5397 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
hfs_find_init+0x17f/0x220 fs/hfs/bfind.c:33
hfs_ext_read_extent+0x19c/0x9d0 fs/hfs/extent.c:200
hfs_extend_file+0x4e0/0xb10 fs/hfs/extent.c:401
hfs_bmap_reserve+0x29c/0x370 fs/hfs/btree.c:234
__hfs_ext_write_extent+0x3cb/0x520 fs/hfs/extent.c:121
__hfs_ext_cache_extent fs/hfs/extent.c:174 [inline]
hfs_ext_read_extent+0x805/0x9d0 fs/hfs/extent.c:202
hfs_extend_file+0x4e0/0xb10 fs/hfs/extent.c:401
hfs_get_block+0x17f/0x820 fs/hfs/extent.c:353
__block_write_begin_int+0x3c0/0x14d0 fs/buffer.c:2111
__block_write_begin fs/buffer.c:2160 [inline]
block_write_begin+0xb1/0x490 fs/buffer.c:2219
cont_write_begin+0x52f/0x730 fs/buffer.c:2576
hfs_write_begin+0x87/0x140 fs/hfs/inode.c:58
generic_perform_write+0x278/0x600 mm/filemap.c:3942
__generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4037
generic_file_write_iter+0xe3/0x350 mm/filemap.c:4063
call_write_iter include/linux/fs.h:1985 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x650/0xe40 fs/read_write.c:584
ksys_write+0x12f/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa88347cae9
RSP: 002b:00007fa8841890c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa88359bf80 RCX: 00007fa88347cae9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007fa8834c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa88359bf80 R15: 00007fff9ee58058
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc1-next-20230912-syzkaller-04552-g3c13c772fc23 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfac/0x1230 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5055 Comm: kworker/0:4 Not tainted 6.6.0-rc1-next-20230912-syzkaller-04552-g3c13c772fc23 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:unwind_next_frame+0x5c0/0x2390 arch/x86/kernel/unwind_orc.c:505
Code: 85 c0 49 89 c4 0f 84 99 fd ff ff e8 5a 96 4d 00 4d 8d 6c 24 05 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 <4c> 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 1d 19 00 00 45 0f b6 74
RSP: 0018:ffffc90003cef690 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffc90003cef710 RCX: 0000000000000000
RDX: 1ffffffff1fb1bb9 RSI: ffffffff813a5d16 RDI: 0000000000000006
RBP: 0000000000000001 R08: 0000000000000006 R09: ffffffff882e1df1
R10: ffffffff882e1e00 R11: e23a2516b6efbc9a R12: ffffffff8fd8ddc4
R13: ffffffff8fd8ddc9 R14: 000000000016c4bf R15: ffffc90003cef745
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020cc7000 CR3: 00000000688ec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
slab_free mm/slub.c:3809 [inline]
__kmem_cache_free+0xb8/0x2f0 mm/slub.c:3822
skb_kfree_head net/core/skbuff.c:945 [inline]
skb_free_head+0x110/0x1b0 net/core/skbuff.c:957
skb_release_data+0x5ba/0x870 net/core/skbuff.c:987
skb_release_all net/core/skbuff.c:1053 [inline]
__kfree_skb net/core/skbuff.c:1067 [inline]
consume_skb net/core/skbuff.c:1283 [inline]
consume_skb+0xd2/0x170 net/core/skbuff.c:1277
nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline]
nsim_dev_trap_report_work+0x872/0xc70 drivers/net/netdevsim/dev.c:850
process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304