BUG: sleeping function called from invalid context at kernel/workqueue.c:3039 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 2970, name: systemd-udevd preempt_count: 100, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by systemd-udevd/2970: #0: ffffffff8c3628d8 (tomoyo_ss){....}-{0:0}, at: tomoyo_path_perm+0x1c1/0x400 security/tomoyo/file.c:847 #1: ffffc90000dc0d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #1: ffffc90000dc0d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1411 irq event stamp: 7342897 hardirqs last enabled at (7342896): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (7342896): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (7342897): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (7342897): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (7341688): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (7341688): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 softirqs last disabled at (7342893): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (7342893): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:396 [inline] [] __do_softirq+0xe1/0x9c2 kernel/softirq.c:534 CPU: 1 PID: 2970 Comm: systemd-udevd Not tainted 5.16.0-rc4-next-20211208-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9583 start_flush_work kernel/workqueue.c:3039 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3103 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3191 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_tx_complete+0x34a/0x3e0 drivers/bluetooth/btusb.c:1396 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 kernel/kcov.c:200 Code: 81 e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 ac 15 00 00 85 c0 74 2b 8b 82 88 15 00 00 <83> f8 02 75 20 48 8b 8a 90 15 00 00 8b 92 8c 15 00 00 48 8b 01 48 RSP: 0018:ffffc900020afa10 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000052 RCX: 0000000000000000 RDX: ffff88807a8d1d40 RSI: ffffffff83ae73fa RDI: 0000000000000003 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000052 R10: ffffffff83ae7446 R11: 00000000000000ff R12: ffffc900020afb48 R13: ffff888012fa5500 R14: ffff888012fa5530 R15: 0000000000000052 tomoyo_check_acl+0x2ca/0x450 security/tomoyo/domain.c:184 tomoyo_path_permission security/tomoyo/file.c:586 [inline] tomoyo_path_permission+0x1ff/0x3a0 security/tomoyo/file.c:573 tomoyo_path_perm+0x2f0/0x400 security/tomoyo/file.c:838 security_inode_getattr+0xcf/0x140 security/security.c:1326 vfs_getattr fs/stat.c:157 [inline] vfs_statx+0x164/0x390 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] vfs_lstat include/linux/fs.h:3292 [inline] __do_sys_newlstat+0x91/0x110 fs/stat.c:398 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcf7552f335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007ffffa65ee28 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000562edd335090 RCX: 00007fcf7552f335 RDX: 00007ffffa65ee60 RSI: 00007ffffa65ee60 RDI: 0000562edd334090 RBP: 00007ffffa65ef20 R08: 0000562edd2e0940 R09: 0000000000001010 R10: 0000000000000020 R11: 0000000000000246 R12: 0000562edd334090 R13: 0000562edd334098 R14: 0000562edd4d4b95 R15: 0000562edd4d4b98 ------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [] ep_poll fs/eventpoll.c:1818 [inline] do not call blocking ops when !TASK_RUNNING; state=1 set at [] do_epoll_wait+0xbb1/0x1940 fs/eventpoll.c:2234 WARNING: CPU: 1 PID: 2969 at kernel/sched/core.c:9506 __might_sleep+0x105/0x150 kernel/sched/core.c:9506 Modules linked in: CPU: 1 PID: 2969 Comm: systemd-journal Tainted: G W 5.16.0-rc4-next-20211208-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__might_sleep+0x105/0x150 kernel/sched/core.c:9506 Code: 70 02 00 48 8d bb f8 16 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 34 48 8b 93 f8 16 00 00 48 c7 c7 60 86 ab 89 e8 b2 14 c0 07 <0f> 0b e9 75 ff ff ff e8 4f fd 72 00 e9 26 ff ff ff 89 34 24 e8 52 RSP: 0018:ffffc90000dc0768 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff88807a4e8000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815f3448 RDI: fffff520001b80df RBP: ffffffff89ab0200 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ed1ae R11: 0000000000000000 R12: 0000000000000bdf R13: 0000000000000001 R14: 0000000000000001 R15: ffff88805d908a98 FS: 00007f152e5d08c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f723000 CR3: 000000007bb41000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: start_flush_work kernel/workqueue.c:3039 [inline] __flush_work+0x109/0xb10 kernel/workqueue.c:3103 __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3191 hci_cmd_sync_cancel net/bluetooth/hci_sync.c:346 [inline] hci_cmd_sync_cancel+0xe1/0x170 net/bluetooth/hci_sync.c:338 btusb_intr_complete+0x3d3/0x4a0 drivers/bluetooth/btusb.c:969 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:schedule_hrtimeout_range+0x0/0x30 kernel/time/hrtimer.c:2349 Code: df e8 f4 81 6c f8 e9 9d fd ff ff e8 6a 82 6c f8 e9 61 ff ff ff e8 40 82 6c f8 eb 98 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <41> 55 41 89 d5 41 54 49 89 f4 55 48 89 fd e8 7d 4b 21 f8 44 89 ea RSP: 0018:ffffc900027ffc80 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900027ffde0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817e2ca8 R11: 0000000000000000 R12: ffff88807a623940 R13: ffff88807a6238d0 R14: ffff88807a6238d0 R15: dffffc0000000000 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1298/0x1940 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f152d899303 Code: 49 89 ca b8 e8 00 00 00 0f 05 48 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24 49 89 ca b8 e8 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 51 c2 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffe432fd410 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 000055f5d84e41e0 RCX: 00007f152d899303 RDX: 0000000000000015 RSI: 00007ffe432fd420 RDI: 0000000000000008 RBP: 00007ffe432fd620 R08: 0000000061b30e1f R09: 00007ffe433dd080 R10: 00000000ffffffff R11: 0000000000000293 R12: 00007ffe432fd420 R13: 0000000000000001 R14: ffffffffffffffff R15: 0005d2c66a43437c ---------------- Code disassembly (best guess): 0: 81 e1 00 01 00 00 and $0x100,%ecx 6: 65 48 8b 14 25 40 70 mov %gs:0x27040,%rdx d: 02 00 f: a9 00 01 ff 00 test $0xff0100,%eax 14: 74 0e je 0x24 16: 85 c9 test %ecx,%ecx 18: 74 35 je 0x4f 1a: 8b 82 ac 15 00 00 mov 0x15ac(%rdx),%eax 20: 85 c0 test %eax,%eax 22: 74 2b je 0x4f 24: 8b 82 88 15 00 00 mov 0x1588(%rdx),%eax * 2a: 83 f8 02 cmp $0x2,%eax <-- trapping instruction 2d: 75 20 jne 0x4f 2f: 48 8b 8a 90 15 00 00 mov 0x1590(%rdx),%rcx 36: 8b 92 8c 15 00 00 mov 0x158c(%rdx),%edx 3c: 48 8b 01 mov (%rcx),%rax 3f: 48 rex.W