INFO: task kworker/u4:5:75 blocked for more than 143 seconds.
Not tainted 6.5.0-next-20230907-syzkaller-14158-gcd04b2fab5ee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5 state:D stack:23632 pid:75 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_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_write_extent+0x1b3/0x1f0 fs/hfs/extent.c:144
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
wb_writeback+0x2a5/0xa90 fs/fs-writeback.c:2070
wb_do_writeback fs/fs-writeback.c:2217 [inline]
wb_workfn+0x29c/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.0:5397 blocked for more than 143 seconds.
Not tainted 6.5.0-next-20230907-syzkaller-14158-gcd04b2fab5ee #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24872 pid:5397 ppid:1 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
wb_wait_for_completion+0x1ae/0x270 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d8/0x270 fs/fs-writeback.c:2650
sync_filesystem fs/sync.c:54 [inline]
sync_filesystem+0xb6/0x280 fs/sync.c:30
generic_shutdown_super+0x7e/0x3c0 fs/super.c:666
kill_block_super+0x3b/0x70 fs/super.c:1646
deactivate_locked_super+0x9a/0x170 fs/super.c:481
deactivate_super+0xde/0x100 fs/super.c:514
cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
task_work_run+0x14d/0x240 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x210/0x240 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: 0033:0x7f0e0687dc87
RSP: 002b:00007ffd7d436888 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0e0687dc87
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffd7d436940
RBP: 00007ffd7d436940 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd7d437a00
R13: 00007f0e068d7c5a R14: 0000000000017921 R15: 0000000000000004
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.5.0-next-20230907-syzkaller-14158-gcd04b2fab5ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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/0:5 Not tainted 6.5.0-next-20230907-syzkaller-14158-gcd04b2fab5ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x70 kernel/kcov.c:206
Code: ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 1d d2 7b 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 <65> 48 8b 14 25 c0 bc 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82
RSP: 0018:ffffc90004a6fad8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff88823bcacf00 RCX: 0000000000000000
RDX: ffff88807860d940 RSI: ffffffff81dde88f RDI: 0000000000000007
RBP: ffff88823bcacaf0 R08: 0000000000000007 R09: 0000000000000007
R10: 0000000000000410 R11: 0000000000000001 R12: adacafaea9a8abaa
R13: 0000000000000410 R14: dffffc0000000000 R15: ffff88823bcac000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560ebf810600 CR3: 000000000c976000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_canary+0xaf/0x570 mm/kfence/core.c:360
kfence_guarded_free+0x1e1/0x5d0 mm/kfence/core.c:534
__kfence_free+0xb1/0x1a0 mm/kfence/core.c:1158
do_slab_free mm/slub.c:3757 [inline]
slab_free mm/slub.c:3810 [inline]
kmem_cache_free+0x463/0x480 mm/slub.c:3831
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:1010
__kfree_skb net/core/skbuff.c:1068 [inline]
consume_skb net/core/skbuff.c:1283 [inline]
consume_skb+0xdf/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