INFO: task syz.3.22:5310 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.22 state:D stack:26936 pid:5310 tgid:5285 ppid:5076 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
io_schedule+0x8d/0x110 kernel/sched/core.c:9043
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
release_metapage+0x8c/0x870 fs/jfs/jfs_metapage.c:764
discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
__get_metapage+0xb1d/0x1050 fs/jfs/jfs_metapage.c:644
jfs_readdir+0x2945/0x4660 fs/jfs/jfs_dtree.c:3018
wrap_directory_iterator+0x94/0xe0 fs/readdir.c:67
iterate_dir+0x57a/0x810 fs/readdir.c:110
__do_sys_getdents fs/readdir.c:326 [inline]
__se_sys_getdents+0x1ef/0x4d0 fs/readdir.c:311
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f541db75bd9
RSP: 002b:00007f541e863048 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f541dd04038 RCX: 00007f541db75bd9
RDX: 0000000000009005 RSI: 0000000020000280 RDI: 0000000000000007
RBP: 00007f541dbe4aa1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f541dd04038 R15: 00007ffc8967a3c8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
5 locks held by kworker/u8:10/2953:
2 locks held by getty/4832:
#0: ffff88802a7440a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5091:
2 locks held by syz.3.22/5310:
#0: ffff88801f23f748 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1191
#1: ffff888076e3b3c0 (&type->i_mutex_dir_key#17){++++}-{3:3}, at: wrap_directory_iterator+0x5d/0xe0 fs/readdir.c:56
2 locks held by syz.2.31/5366:
2 locks held by syz.4.571/7580:
2 locks held by syz.3.575/7563:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7580 Comm: syz.4.571 Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:32 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:__might_resched+0x1d9/0x780 kernel/sched/core.c:10160
Code: 00 00 00 4c 89 ee 4d 89 f5 45 89 e6 48 ba 00 00 00 00 00 fc ff df 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 <80> 3c 13 00 74 15 48 89 f3 e8 99 f3 90 00 48 89 de 48 ba 00 00 00
RSP: 0018:ffffc9000343f9e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000687f50 RCX: ffff8880298b3c00
RDX: dffffc0000000000 RSI: ffff8880298b3c00 RDI: ffffc9000343fa80
RBP: ffffc9000343faf0 R08: ffffffff81cd9fac R09: 1ffffd40002e9156
R10: dffffc0000000000 R11: fffff940002e9157 R12: 0000000000000000
R13: ffff8880298b4044 R14: 0000000000000fc1 R15: 1ffff92000687f44
FS: 00007f6753ba96c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f596e6d1178 CR3: 000000002c1b8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
generic_perform_write+0x459/0x640 mm/filemap.c:4033
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2919
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6752d7475f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 8c 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 7c 8c 02 00 48
RSP: 002b:00007f6753ba8e00 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f6752d7475f
RDX: 0000000001000000 RSI: 00007f6748a00000 RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000050ed
R10: 000000002000a2c2 R11: 0000000000000293 R12: 0000000000000008
R13: 00007f6753ba8f00 R14: 00007f6753ba8ec0 R15: 00007f6748a00000