INFO: task syz-executor.2:2457 blocked for more than 143 seconds.
Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29032 pid:2457 ppid:5056 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
__fdget_pos+0x2b0/0x340 fs/file.c:1062
fdget_pos include/linux/file.h:74 [inline]
ksys_lseek fs/read_write.c:296 [inline]
__do_sys_lseek fs/read_write.c:313 [inline]
__se_sys_lseek fs/read_write.c:311 [inline]
__x64_sys_lseek+0x7a/0x1d0 fs/read_write.c:311
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2f72a7cae9
RSP: 002b:00007f2f737e60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007f2f72b9c050 RCX: 00007f2f72a7cae9
RDX: 0000000000000001 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007f2f72ac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2f72b9c050 R15: 00007ffe4cb5a748
INFO: task syz-executor.2:2459 blocked for more than 143 seconds.
Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29032 pid:2459 ppid:5056 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
__fdget_pos+0x2b0/0x340 fs/file.c:1062
fdget_pos include/linux/file.h:74 [inline]
__do_sys_getdents fs/readdir.c:318 [inline]
__se_sys_getdents+0x1c3/0x4c0 fs/readdir.c:307
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2f72a7cae9
RSP: 002b:00007f2f737c50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f2f72b9c120 RCX: 00007f2f72a7cae9
RDX: 0000000000000099 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00007f2f72ac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2f72b9c120 R15: 00007ffe4cb5a748
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d329570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d329930 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d3293a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4773:
#0: ffff8880289a6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
3 locks held by syz-executor.2/2454:
1 lock held by syz-executor.2/2457:
#0: ffff88801e93cac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1062
1 lock held by syz-executor.2/2459:
#0: ffff88801e93cac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1062
3 locks held by syz-executor.0/4779:
1 lock held by syz-executor.0/4796:
#0: ffff8880337f5248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1062
1 lock held by syz-executor.0/4797:
#0: ffff8880337f5248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1062
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #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+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
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: 4779 Comm: syz-executor.0 Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__might_sleep+0xb/0xc0 kernel/sched/core.c:10105
Code: 89 f9 80 e1 07 38 c1 0f 8c 9e fe ff ff 4c 89 ff e8 fa d5 83 00 e9 91 fe ff ff 0f 1f 44 00 00 f3 0f 1e fa 55 41 57 41 56 41 54 <53> 41 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df 65 48 8b 2d 5c
RSP: 0018:ffffc9000573f5e0 EFLAGS: 00000246
RAX: ffff888074f723a0 RBX: ffff888074f723a0 RCX: 1ffff92000ae7ea0
RDX: ffffc90003c41000 RSI: 00000000000005a3 RDI: ffffffff8b17bc00
RBP: 0000000000000200 R08: ffffffff81c0f1cb R09: 1ffffd4000406410
R10: dffffc0000000000 R11: fffff94000406411 R12: 0000000000000080
R13: ffff888148c58b80 R14: 0000000000000008 R15: 0000000000000200
FS: 00007fb163eb76c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562938cd8600 CR3: 000000007bf47000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__getblk_gfp+0x43/0x630 fs/buffer.c:1443
__bread_gfp+0x2e/0x380 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:351 [inline]
__exfat_ent_get fs/exfat/fatent.c:48 [inline]
exfat_ent_get+0x14d/0x400 fs/exfat/fatent.c:97
exfat_readdir fs/exfat/dir.c:187 [inline]
exfat_iterate+0x137e/0x3400 fs/exfat/dir.c:261
wrap_directory_iterator+0x91/0xd0 fs/readdir.c:67
iterate_dir+0x1cd/0x580 fs/readdir.c:106
__do_sys_getdents64 fs/readdir.c:405 [inline]
__se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:390
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb16307cae9
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:00007fb163eb70c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fb16319bf80 RCX: 00007fb16307cae9
RDX: 00000000000000ca RSI: 00000000200001c0 RDI: 0000000000000005
RBP: 00007fb1630c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb16319bf80 R15: 00007ffd387c0ac8