INFO: task syz-executor.2:12287 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26856 pid:12287 ppid:5045 flags:0x00004004
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
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:816 [inline]
blk_ioctl_zeroout block/ioctl.c:182 [inline]
blkdev_common_ioctl+0x1532/0x2510 block/ioctl.c:501
blkdev_ioctl+0x520/0x730 block/ioctl.c:615
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856
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: 0033:0x7fe5ca68c389
RSP: 002b:00007fe5cb391168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe5ca7abf80 RCX: 00007fe5ca68c389
RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000005
RBP: 00007fe5ca6d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7b6c30af R14: 00007fe5cb391300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d326af0 (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: ffffffff8d326eb0 (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: ffffffff8d326920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4751:
#0: ffff888028c46098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.4/12286:
1 lock held by syz-executor.2/12287:
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:182 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1532/0x2510 block/ioctl.c:501
1 lock held by syz-executor.2/12477:
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:182 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1532/0x2510 block/ioctl.c:501
1 lock held by syz-executor.4/12478:
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.4/12479:
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
1 lock held by syz-executor.2/12532:
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:182 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1532/0x2510 block/ioctl.c:501
1 lock held by syz-executor.4/12546:
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:826 [inline]
#0: ffff888148d04e48 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4428 Comm: syslogd Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__kasan_check_read+0xa/0x20 mm/kasan/shadow.c:31
Code: 48 c7 c7 6f 9f a7 8c 48 89 de eb 0a 48 c7 c7 a7 9f a7 8c 4c 89 fe e8 05 2d d3 08 31 db eb d4 90 f3 0f 1e fa 89 f6 48 8b 0c 24 <31> d2 e9 bf ea ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
RSP: 0018:ffffc9000255f2d8 EFLAGS: 00000007
RAX: 0000000000000014 RBX: 0000000000000538 RCX: ffffffff816b5fc9
RDX: 0000000060e8ea66 RSI: 0000000000000008 RDI: ffffffff9079e3a0
RBP: ffffc9000255f5a8 R08: dffffc0000000000 R09: 1ffffffff20f3c60
R10: dffffc0000000000 R11: fffffbfff20f3c61 R12: 000000004be75e34
R13: ffff88802b8ec640 R14: 000000008d7bf479 R15: ffff88802b8ec6b8
FS: 00007f93bc524380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0d42235580 CR3: 000000002cb53000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
__lock_acquire+0x1089/0x7f70 kernel/locking/lockdep.c:5140
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
rcu_lock_acquire+0x2e/0x40 include/linux/rcupdate.h:302
rcu_read_lock include/linux/rcupdate.h:748 [inline]
filemap_get_entry+0x11c/0x460 mm/filemap.c:1823
shmem_get_folio_gfp+0x34b/0x3470 mm/shmem.c:1882
shmem_get_folio mm/shmem.c:2079 [inline]
shmem_write_begin+0x172/0x4e0 mm/shmem.c:2573
generic_perform_write+0x31b/0x630 mm/filemap.c:3923
generic_file_write_iter+0xaf/0x310 mm/filemap.c:4044
call_write_iter include/linux/fs.h:1871 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x782/0xaf0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
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: 0033:0x7f93bc678bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffde2470838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f93bc678bf2
RDX: 0000000000000096 RSI: 00005583b350bc50 RDI: 0000000000000003
RBP: 00005583b350bc50 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f93bc8173a3 R11: 0000000000000246 R12: 0000000000000096
R13: 00007f93bc524300 R14: 0000000000000004 R15: 00005583b350ba60