BUG: scheduling while atomic: syz-executor.2/7795/0x00000002
Modules linked in:
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 7795 Comm: syz-executor.2 Tainted: G        W         5.4.125-syzkaller-00213-g5c5f02c3e9a5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x24e lib/dump_stack.c:118
 __schedule_bug+0x1af/0x240 kernel/sched/core.c:4076
 schedule_debug kernel/sched/core.c:4100 [inline]
 __schedule+0xa42/0x1170 kernel/sched/core.c:4219
 schedule+0x13b/0x1d0 kernel/sched/core.c:4355
 __lock_sock net/core/sock.c:2409 [inline]
 lock_sock_nested+0x1ed/0x310 net/core/sock.c:2955
 lock_sock include/net/sock.h:1546 [inline]
 hci_sock_dev_event+0x2da/0x570 net/bluetooth/hci_sock.c:758
 hci_unregister_dev+0x2a5/0x13f0 net/bluetooth/hci_core.c:3424
 hci_uart_tty_close+0x1a2/0x220 drivers/bluetooth/hci_ldisc.c:545
 tty_ldisc_close drivers/tty/tty_ldisc.c:494 [inline]
 tty_ldisc_kill drivers/tty/tty_ldisc.c:642 [inline]
 tty_ldisc_release+0x272/0x600 drivers/tty/tty_ldisc.c:814
 tty_release_struct+0x27/0xd0 drivers/tty/tty_io.c:1612
 tty_release+0xdd7/0x10a0 drivers/tty/tty_io.c:1785
 __fput+0x27d/0x6c0 fs/file_table.c:281
 task_work_run+0x186/0x1b0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:163 [inline]
 prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f16fcf2f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
RAX: 0000000000000004 RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffea07983ff R14: 00007f16fcf2f300 R15: 0000000000022000
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(val > preempt_count())
WARNING: CPU: 0 PID: 7795 at kernel/sched/core.c:4019 preempt_count_sub+0x9c/0x160 kernel/sched/core.c:4019
Modules linked in:
CPU: 0 PID: 7795 Comm: syz-executor.2 Tainted: G        W         5.4.125-syzkaller-00213-g5c5f02c3e9a5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:preempt_count_sub+0x9c/0x160 kernel/sched/core.c:4019
Code: 42 8a 04 30 84 c0 0f 85 89 00 00 00 83 3d df 95 00 05 00 75 d3 48 c7 c7 80 cb aa 84 48 c7 c6 20 cc aa 84 31 c0 e8 54 33 f6 ff <0f> 0b eb ba e8 ab 32 de 00 85 c0 74 b1 48 c7 c0 d4 2c 47 86 48 c1
RSP: 0018:ffff88819244fc48 EFLAGS: 00010246
RAX: d143aa1671ef4300 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc9000659d000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000001 R08: ffffffff814e8d8f R09: fffffbfff0dc96da
R10: fffffbfff0dc96da R11: 0000000000000000 R12: ffff8881db891000
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff8881a0e7c000
FS:  00007f16fcf2f700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 00000001e0e1c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __raw_read_unlock include/linux/rwlock_api_smp.h:227 [inline]
 _raw_read_unlock+0x21/0x40 kernel/locking/spinlock.c:255
 hci_unregister_dev+0x2a5/0x13f0 net/bluetooth/hci_core.c:3424
 hci_uart_tty_close+0x1a2/0x220 drivers/bluetooth/hci_ldisc.c:545
 tty_ldisc_close drivers/tty/tty_ldisc.c:494 [inline]
 tty_ldisc_kill drivers/tty/tty_ldisc.c:642 [inline]
 tty_ldisc_release+0x272/0x600 drivers/tty/tty_ldisc.c:814
 tty_release_struct+0x27/0xd0 drivers/tty/tty_io.c:1612
 tty_release+0xdd7/0x10a0 drivers/tty/tty_io.c:1785
 __fput+0x27d/0x6c0 fs/file_table.c:281
 task_work_run+0x186/0x1b0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:163 [inline]
 prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f16fcf2f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
RAX: 0000000000000004 RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffea07983ff R14: 00007f16fcf2f300 R15: 0000000000022000
---[ end trace 7d8aeb0260661de5 ]---