INFO: task syz-executor.5:12817 blocked for more than 143 seconds.
Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27136 pid:12817 ppid:5068 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
coredump_task_exit kernel/exit.c:436 [inline]
do_exit+0x3f4/0x2a20 kernel/exit.c:823
do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
get_signal+0x23d1/0x27b0 kernel/signal.c:2892
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2b7587cae9
RSP: 002b:00007ffd20154708 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007dd96 RCX: 00007f2b7587cae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2b7599bf8c
RBP: 0000000000000032 R08: 00007f2b7599bf8c R09: 00007f2b7599bf8c
R10: 00007ffd20154840 R11: 0000000000000246 R12: 00007f2b7599bf8c
R13: 000000000007ddc8 R14: 00007ffd20154860 R15: 00007ffd20154840
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12818 Comm: syz-executor.5 Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:write_comp_data+0x7/0x90 kernel/kcov.c:230
Code: 81 e2 00 01 ff 00 75 10 65 48 8b 04 25 c0 bc 03 00 48 8b 80 f8 15 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 21 f4 7b 7e <49> 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25
RSP: 0018:ffffc900001f0670 EFLAGS: 00000246
RAX: 0000000000000101 RBX: 0000000000000101 RCX: ffffffff813a59c4
RDX: 0000000000000101 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc900001f0dd8 R08: 0000000000000006 R09: ffffc900001f0da8
R10: ffffc900001f0dd8 R11: 0000000000000000 R12: ffffc900001e9000
R13: ffffc900001f1000 R14: ffffc900001f0de0 R15: ffffc900001f0da8
FS: 00007f2b765df6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86c3978038 CR3: 0000000017f8d000 CR4: 0000000000350ee0
Call Trace:
unwind_next_frame+0x1254/0x2390 arch/x86/kernel/unwind_orc.c:672
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_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x185/0x3f0 mm/slub.c:3523
__alloc_skb+0x287/0x330 net/core/skbuff.c:640
__netdev_alloc_skb+0x72/0x3f0 net/core/skbuff.c:714
netdev_alloc_skb include/linux/skbuff.h:3225 [inline]
dev_alloc_skb include/linux/skbuff.h:3238 [inline]
__ieee80211_beacon_get+0xc2f/0x16e0 net/mac80211/tx.c:5425
ieee80211_beacon_get_tim+0xa5/0x570 net/mac80211/tx.c:5547
ieee80211_beacon_get include/net/mac80211.h:5421 [inline]
mac80211_hwsim_beacon_tx+0x3f6/0x730 drivers/net/wireless/virtual/mac80211_hwsim.c:2260
__iterate_interfaces+0x2d2/0x580 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 net/mac80211/util.c:802
mac80211_hwsim_beacon+0x101/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2290
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x203/0xc10 kernel/time/hrtimer.c:1752
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1769
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:console_flush_all+0x9d2/0xf70 kernel/printk/printk.c:2972
Code: 44 63 23 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 42 a9 1c 00 48 85 db 0f 85 95 03 00 00 e8 a4 ad 1c 00 fb 48 8b 44 24 08 <48> 8b 14 24 0f b6 00 83 e2 07 38 d0 7f 08 84 c0 0f 85 9e 04 00 00
RSP: 0018:ffffc9000357ddb8 EFLAGS: 00000246
RAX: fffff520006afbe2 RBX: 0000000000000000 RCX: ffffc90004f39000
RDX: 0000000000040000 RSI: ffffffff816b20dc RDI: 0000000000000007
RBP: ffffffff8d6daf60 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 205d383138323154 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8d6dafb8 R15: 0000000000000001
console_unlock+0x10c/0x260 kernel/printk/printk.c:3035
vprintk_emit+0x189/0x630 kernel/printk/printk.c:2307
vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2332
f2fs_printk+0x169/0x2b0 fs/f2fs/super.c:262
f2fs_inode_chksum_verify+0x31c/0x3c0 fs/f2fs/inode.c:191
__get_node_page.part.0+0x68f/0x1310 fs/f2fs/node.c:1457
__get_node_page fs/f2fs/node.c:35 [inline]
f2fs_get_node_page+0x106/0x170 fs/f2fs/node.c:1483
gc_node_segment fs/f2fs/gc.c:1041 [inline]
do_garbage_collect+0x1113/0x3fa0 fs/f2fs/gc.c:1763
f2fs_gc+0x9f8/0x2140 fs/f2fs/gc.c:1869
f2fs_balance_fs+0x5c4/0x750 fs/f2fs/segment.c:439
f2fs_write_single_data_page+0x141b/0x1aa0 fs/f2fs/data.c:2965
f2fs_write_cache_pages+0xcca/0x2030 fs/f2fs/data.c:3210
__f2fs_write_data_pages fs/f2fs/data.c:3360 [inline]
f2fs_write_data_pages+0x4d3/0xe20 fs/f2fs/data.c:3387
do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
filemap_fdatawrite_wbc mm/filemap.c:390 [inline]
filemap_fdatawrite_wbc+0x144/0x1b0 mm/filemap.c:380
__filemap_fdatawrite_range+0xba/0x100 mm/filemap.c:423
file_write_and_wait_range+0xcc/0x140 mm/filemap.c:781
f2fs_do_sync_file+0x2d2/0x1ff0 fs/f2fs/file.c:271
f2fs_sync_file+0x140/0x1a0 fs/f2fs/file.c:389
vfs_fsync_range+0x141/0x220 fs/sync.c:188
generic_write_sync include/linux/fs.h:2625 [inline]
f2fs_file_write_iter+0x133c/0x2410 fs/f2fs/file.c:4816
__kernel_write_iter+0x261/0x7e0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x299/0x790 fs/coredump.c:915
elf_core_dump+0x2721/0x38e0 fs/binfmt_elf.c:2142
do_coredump+0x2c96/0x3fc0 fs/coredump.c:764
get_signal+0x244b/0x27b0 kernel/signal.c:2878
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2b7587cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2b765df0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffe5 RBX: 00007f2b7599bf80 RCX: 00007f2b7587cae9
RDX: 0000000000000000 RSI: 0000000016000000 RDI: 0000000000000004
RBP: 00007f2b758c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2b7599bf80 R15: 00007ffd20154628