INFO: task syz-executor686:5080 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor686 state:D stack:27400 pid:5080 tgid:5080 ppid:5057 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x948/0x1400 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blk_ioctl_zeroout block/ioctl.c:185 [inline]
blkdev_common_ioctl+0x1109/0x1cc0 block/ioctl.c:514
blkdev_ioctl+0x243/0x760 block/ioctl.c:628
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f8956e63ae9
RSP: 002b:00007ffcb5a45ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8956e63ae9
RDX: 0000000020000040 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000dbac
R13: 00007ffcb5a45cfc R14: 00007ffcb5a45d10 R15: 00007ffcb5a45d00
Showing all locks held in the system:
1 lock held by kworker/1:0H/24:
1 lock held by khungtaskd/29:
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by syslogd/4490:
2 locks held by klogd/4497:
2 locks held by getty/4805:
#0: ffff88802ea8a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
1 lock held by syz-executor686/5069:
1 lock held by syz-executor686/5080:
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1109/0x1cc0 block/ioctl.c:514
1 lock held by syz-executor686/5081:
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1109/0x1cc0 block/ioctl.c:514
1 lock held by syz-executor686/5082:
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1109/0x1cc0 block/ioctl.c:514
1 lock held by syz-executor686/5089:
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1109/0x1cc0 block/ioctl.c:514
1 lock held by syz-executor686/5090:
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline]
#0: ffff88801b49fc40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1109/0x1cc0 block/ioctl.c:514
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 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:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4497 Comm: klogd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_release+0x38f/0x690 kernel/locking/lockdep.c:5776
Code: 85 42 02 00 00 0b 05 80 dd 3a 11 0f 84 5a 01 00 00 48 c7 c7 80 b1 cc 8a e8 7e d0 25 09 b8 ff ff ff ff 65 0f c1 05 09 12 9a 7e <83> f8 01 0f 85 c8 01 00 00 9c 58 f6 c4 02 0f 85 b3 01 00 00 48 f7
RSP: 0018:ffffc900031c76d0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: b56ff67b6f1744f3 RCX: ffffc900031c7720
RDX: 1ffff1100f32e156 RSI: ffffffff8accb180 RDI: ffffffff8b2fd380
RBP: 1ffff92000638edc R08: 0000000000000000 R09: fffffbfff1e75f02
R10: ffffffff8f3af817 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000002 R14: ffff888079970ab8 R15: ffff888079970000
FS: 00007f3f53c41380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005623c74ab680 CR3: 000000002d6d7000 CR4: 0000000000350ef0
Call Trace:
__raw_write_unlock_irqrestore include/linux/rwlock_api_smp.h:263 [inline]
_raw_write_unlock_irqrestore+0x1a/0x70 kernel/locking/spinlock.c:350
release_alloc_meta mm/kasan/generic.c:510 [inline]
kasan_release_object_meta+0x26/0xa0 mm/kasan/generic.c:543
qlink_free mm/kasan/quarantine.c:148 [inline]
qlist_free_all+0x44/0x150 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:283
__kasan_kmalloc+0x86/0xb0 mm/kasan/common.c:380
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:3981 [inline]
__kmalloc_node_track_caller+0x219/0x460 mm/slub.c:4001
kmalloc_reserve+0xef/0x260 net/core/skbuff.c:582
__alloc_skb+0x12b/0x330 net/core/skbuff.c:651
alloc_skb include/linux/skbuff.h:1296 [inline]
alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6394
sock_alloc_send_pskb+0x7e4/0x970 net/core/sock.c:2784
unix_dgram_sendmsg+0x464/0x1ca0 net/unix/af_unix.c:1974
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
__sys_sendto+0x225/0x310 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2199
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f3f53da39b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe733cc548 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f3f53da39b5
RDX: 000000000000004f RSI: 0000564ad490ea80 RDI: 0000000000000003
RBP: 0000564ad490a910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f3f53f31212 R14: 00007ffe733cc648 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.016 msecs