BUG: scheduling while atomic: syz-executor.5/10220/0x00000002
Modules linked in:
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 10220 Comm: syz-executor.5 Not tainted 5.4.125-syzkaller-00015-gf4bf8b65e48f #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:2414 [inline]
 lock_sock_nested+0x1ed/0x310 net/core/sock.c:2960
 lock_sock include/net/sock.h:1549 [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
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xcb9/0x2bf0 kernel/exit.c:812
 do_group_exit+0x15c/0x2c0 kernel/exit.c:910
 get_signal+0x164f/0x1fc0 kernel/signal.c:2745
 do_signal+0x8d/0x610 arch/x86/kernel/signal.c:793
 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline]
 prepare_exit_to_usermode+0x207/0x310 arch/x86/entry/common.c:194
 retint_user+0x8/0x8
RIP: 0033:0x466601
Code: 49 89 d0 48 99 48 f7 f9 89 bb 20 01 00 00 89 b3 24 01 00 00 48 85 d2 74 0a 48 8b 6c 24 18 48 83 c4 20 c3 4c 89 04 24 48 8b 44 <24> 30 48 ff c0 48 89 44 24 08 48 c7 44 24 10 03 00 00 00 e8 a7 83
RSP: 002b:0000000020000100 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 000000000056c038 RCX: 00000000004665f9
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 0000000000200000
RBP: 00000000004bfcc4 R08: 0000000020000200 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffe4d51b56f R14: 00007f2edeb4c300 R15: 0000000000022000
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(val > preempt_count())
WARNING: CPU: 0 PID: 10220 at kernel/sched/core.c:4019 preempt_count_sub+0x9c/0x160 kernel/sched/core.c:4019
Modules linked in:
CPU: 0 PID: 10220 Comm: syz-executor.5 Tainted: G        W         5.4.125-syzkaller-00015-gf4bf8b65e48f #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 9f af 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 fb fe de 00 85 c0 74 b1 48 c7 c0 94 46 47 86 48 c1
RSP: 0018:ffff8881db6f7730 EFLAGS: 00010246
RAX: 8573984c2f491b00 RBX: 0000000000000001 RCX: ffff88818bacbf00
RDX: 0000000000000000 RSI: 0000000000002e90 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff814e8e0f R09: fffffbfff0dcd2da
R10: fffffbfff0dcd2da R11: 0000000000000000 R12: ffff8881ed80fc00
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff888198c44000
FS:  00007f2edeb4c700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff84f9a000 CR3: 00000001e7c58000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xcb9/0x2bf0 kernel/exit.c:812
 do_group_exit+0x15c/0x2c0 kernel/exit.c:910
 get_signal+0x164f/0x1fc0 kernel/signal.c:2745
 do_signal+0x8d/0x610 arch/x86/kernel/signal.c:793
 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline]
 prepare_exit_to_usermode+0x207/0x310 arch/x86/entry/common.c:194
 retint_user+0x8/0x8
RIP: 0033:0x466601
Code: 49 89 d0 48 99 48 f7 f9 89 bb 20 01 00 00 89 b3 24 01 00 00 48 85 d2 74 0a 48 8b 6c 24 18 48 83 c4 20 c3 4c 89 04 24 48 8b 44 <24> 30 48 ff c0 48 89 44 24 08 48 c7 44 24 10 03 00 00 00 e8 a7 83
RSP: 002b:0000000020000100 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 000000000056c038 RCX: 00000000004665f9
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 0000000000200000
RBP: 00000000004bfcc4 R08: 0000000020000200 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffe4d51b56f R14: 00007f2edeb4c300 R15: 0000000000022000
---[ end trace e6ff0cba469c0127 ]---