INFO: task kworker/u4:7:1036 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-next-20230825-syzkaller-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:7 state:D stack:24272 pid:1036 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.0:5462 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-next-20230825-syzkaller-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26936 pid:5462 ppid:5393 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:410
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:410
hfs_get_block+0x17f/0x820 fs/hfs/extent.c:362
__block_write_begin_int+0x3c0/0x1470 fs/buffer.c:2107
__block_write_begin fs/buffer.c:2157 [inline]
block_write_begin+0xb1/0x490 fs/buffer.c:2216
cont_write_begin+0x52f/0x730 fs/buffer.c:2573
hfs_write_begin+0x87/0x140 fs/hfs/inode.c:58
generic_perform_write+0x278/0x600 mm/filemap.c:3945
__generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4040
generic_file_write_iter+0xe3/0x350 mm/filemap.c:4066
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: 0033:0x7f9ed527cae9
RSP: 002b:00007f9ed5ff70c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9ed539bf80 RCX: 00007f9ed527cae9
RDX: 000000000208e24b RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007f9ed52c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9ed539bf80 R15: 00007fff8b4e7dc8
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.5.0-rc7-next-20230825-syzkaller-dirty #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 957 Comm: kworker/u4:5 Not tainted 6.5.0-rc7-next-20230825-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__phys_addr+0x10/0x140 arch/x86/mm/physaddr.c:16
Code: 99 8c e8 43 06 a2 00 eb 88 e8 3c 06 a2 00 e9 37 ff ff ff 0f 1f 80 00 00 00 00 f3 0f 1e fa 41 54 45 31 e4 55 bd 00 00 00 80 53 <48> 89 fb e8 b8 4b 4c 00 48 01 dd 48 89 df 41 0f 92 c4 48 89 ee e8
RSP: 0018:ffffc900052cf980 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88801e2d0000 RSI: ffffffff812fdd3a RDI: ffffffff81dd4989
RBP: 0000000080000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002005a000 CR3: 000000000c976000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__text_poke+0x102/0xc90 arch/x86/kernel/alternative.c:1792
text_poke arch/x86/kernel/alternative.c:1897 [inline]
text_poke_bp_batch+0x190/0x960 arch/x86/kernel/alternative.c:2205
text_poke_flush arch/x86/kernel/alternative.c:2399 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2396 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2406
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32e/0x410 kernel/jump_label.c:829
static_key_disable_cpuslocked+0x154/0x1b0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate mm/kfence/core.c:835 [inline]
toggle_allocation_gate+0x13f/0x250 mm/kfence/core.c:822
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