audit: type=1400 audit(1580429635.547:67): avc: denied { name_bind } for pid=9097 comm="syz-executor.1" src=20000 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 audit: type=1400 audit(1580429635.557:68): avc: denied { node_bind } for pid=9097 comm="syz-executor.1" src=20000 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:node_t:s0 tclass=dccp_socket permissive=1 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908 in_atomic(): 1, irqs_disabled(): 0, pid: 9106, name: syz-executor.4 3 locks held by syz-executor.4/9106: #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pte_range mm/memory.c:1299 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pmd_range mm/memory.c:1440 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pud_range mm/memory.c:1469 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_p4d_range mm/memory.c:1490 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: unmap_page_range+0x8a9/0x1fb0 mm/memory.c:1511 #1: 00000000a971f724 (rcu_read_lock){....}, at: lock_page_memcg+0x0/0x240 include/linux/cgroup.h:482 #2: 00000000ccd34d53 ((&sp->resync_t)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:168 [inline] #2: 00000000ccd34d53 ((&sp->resync_t)){+.-.}, at: call_timer_fn+0xda/0x720 kernel/time/timer.c:1316 Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] zap_pte_range mm/memory.c:1299 [inline] [] zap_pmd_range mm/memory.c:1440 [inline] [] zap_pud_range mm/memory.c:1469 [inline] [] zap_p4d_range mm/memory.c:1490 [inline] [] unmap_page_range+0x8a9/0x1fb0 mm/memory.c:1511 CPU: 0 PID: 9106 Comm: syz-executor.4 Not tainted 4.19.100-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 ___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6192 __might_sleep+0x95/0x190 kernel/sched/core.c:6145 __mutex_lock_common kernel/locking/mutex.c:908 [inline] __mutex_lock+0xc8/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123 resync_tnc+0x1b6/0x320 drivers/net/hamradio/6pack.c:522 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x50 kernel/kcov.c:100 Code: 63 ea ff 48 c7 05 44 e7 5d 09 00 00 00 00 e9 96 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 8b 75 08 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 28 e9 96 7e 81 e2 00 01 1f 00 RSP: 0018:ffff888045ff7680 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffffea0002009080 RCX: ffffffff819e20b1 RDX: 0000000000000000 RSI: ffffffff819e2152 RDI: 0000000000000001 RBP: ffff888045ff7680 R08: ffff8880454225c0 R09: ffffed1015d04733 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: 0000000000000000 R13: ffffea0002009088 R14: 0000000000000000 R15: dead000000000100 __read_once_size include/linux/compiler.h:193 [inline] PageTail include/linux/page-flags.h:151 [inline] PageCompound include/linux/page-flags.h:156 [inline] PageHuge+0xe2/0x170 mm/hugetlb.c:1348 page_remove_file_rmap mm/rmap.c:1218 [inline] page_remove_rmap+0x545/0x12c0 mm/rmap.c:1300 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xda2/0x1fb0 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3091 __mmput kernel/fork.c:1015 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1036 exit_mm kernel/exit.c:546 [inline] do_exit+0xb1e/0x30d0 kernel/exit.c:867 do_group_exit+0x135/0x370 kernel/exit.c:983 get_signal+0x3ec/0x1fc0 kernel/signal.c:2583 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b349 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9caf26fcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075c078 RCX: 000000000045b349 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075c078 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075c07c R13: 00007fffe99b355f R14: 00007f9caf2709c0 R15: 000000000075c07c ================================ WARNING: inconsistent lock state 4.19.100-syzkaller #0 Tainted: G W -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.4/9106 [HC0[0]:SC1[1]:HE1:SE0] takes: 000000007a2a7939 (&tpk_port.port_write_mutex){+.?.}, at: tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123 tnc_init drivers/net/hamradio/6pack.c:536 [inline] sixpack_open+0x9d3/0xbf5 drivers/net/hamradio/6pack.c:632 tty_ldisc_open.isra.0+0x89/0xd0 drivers/tty/tty_ldisc.c:469 tty_set_ldisc+0x2d7/0x690 drivers/tty/tty_ldisc.c:594 tiocsetd drivers/tty/tty_io.c:2359 [inline] tty_ioctl+0x65e/0x1510 drivers/tty/tty_io.c:2603 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 1402 hardirqs last enabled at (1402): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (1401): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (0): [] copy_process.part.0+0x15b2/0x7a60 kernel/fork.c:1840 softirqs last disabled at (1255): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (1255): [] irq_exit+0x180/0x1d0 kernel/softirq.c:412 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&tpk_port.port_write_mutex); lock(&tpk_port.port_write_mutex); *** DEADLOCK *** 3 locks held by syz-executor.4/9106: #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pte_range mm/memory.c:1299 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pmd_range mm/memory.c:1440 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pud_range mm/memory.c:1469 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_p4d_range mm/memory.c:1490 [inline] #0: 00000000d8905c82 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: unmap_page_range+0x8a9/0x1fb0 mm/memory.c:1511 #1: 00000000a971f724 (rcu_read_lock){....}, at: lock_page_memcg+0x0/0x240 include/linux/cgroup.h:482 #2: 00000000ccd34d53 ((&sp->resync_t)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:168 [inline] #2: 00000000ccd34d53 ((&sp->resync_t)){+.-.}, at: call_timer_fn+0xda/0x720 kernel/time/timer.c:1316 stack backtrace: CPU: 0 PID: 9106 Comm: syz-executor.4 Tainted: G W 4.19.100-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 print_usage_bug.cold+0x330/0x42a kernel/locking/lockdep.c:2540 valid_state kernel/locking/lockdep.c:2553 [inline] mark_lock_irq kernel/locking/lockdep.c:2747 [inline] mark_lock+0xd1b/0x1370 kernel/locking/lockdep.c:3127 mark_irqflags kernel/locking/lockdep.c:3005 [inline] __lock_acquire+0xc62/0x49c0 kernel/locking/lockdep.c:3368 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123 resync_tnc+0x1b6/0x320 drivers/net/hamradio/6pack.c:522 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x50 kernel/kcov.c:100 Code: 63 ea ff 48 c7 05 44 e7 5d 09 00 00 00 00 e9 96 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 8b 75 08 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 28 e9 96 7e 81 e2 00 01 1f 00 RSP: 0018:ffff888045ff7680 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffffea0002009080 RCX: ffffffff819e20b1 RDX: 0000000000000000 RSI: ffffffff819e2152 RDI: 0000000000000001 RBP: ffff888045ff7680 R08: ffff8880454225c0 R09: ffffed1015d04733 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: 0000000000000000 R13: ffffea0002009088 R14: 0000000000000000 R15: dead000000000100 __read_once_size include/linux/compiler.h:193 [inline] PageTail include/linux/page-flags.h:151 [inline] PageCompound include/linux/page-flags.h:156 [inline] PageHuge+0xe2/0x170 mm/hugetlb.c:1348 page_remove_file_rmap mm/rmap.c:1218 [inline] page_remove_rmap+0x545/0x12c0 mm/rmap.c:1300 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xda2/0x1fb0 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3091 __mmput kernel/fork.c:1015 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1036 exit_mm kernel/exit.c:546 [inline] do_exit+0xb1e/0x30d0 kernel/exit.c:867 do_group_exit+0x135/0x370 kernel/exit.c:983 get_signal+0x3ec/0x1fc0 kernel/signal.c:2583 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b349 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9caf26fcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075c078 RCX: 000000000045b349 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075c078 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075c07c R13: 00007fffe99b355f R14: 00007f9caf2709c0 R15: 000000000075c07c BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908 in_atomic(): 1, irqs_disabled(): 0, pid: 9106, name: syz-executor.4 INFO: lockdep is turned off. Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] zap_pte_range mm/memory.c:1299 [inline] [] zap_pmd_range mm/memory.c:1440 [inline] [] zap_pud_range mm/memory.c:1469 [inline] [] zap_p4d_range mm/memory.c:1490 [inline] [] unmap_page_range+0x8a9/0x1fb0 mm/memory.c:1511 CPU: 0 PID: 9106 Comm: syz-executor.4 Tainted: G W 4.19.100-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 ___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6192 __might_sleep+0x95/0x190 kernel/sched/core.c:6145 __mutex_lock_common kernel/locking/mutex.c:908 [inline] __mutex_lock+0xc8/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123 resync_tnc+0x22e/0x320 drivers/net/hamradio/6pack.c:523 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x50 kernel/kcov.c:100 Code: 63 ea ff 48 c7 05 44 e7 5d 09 00 00 00 00 e9 96 e9 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 8b 75 08 <65> 48 8b 04 25 40 ee 01 00 65 8b 15 28 e9 96 7e 81 e2 00 01 1f 00 RSP: 0018:ffff888045ff7680 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffffea0002009080 RCX: ffffffff819e20b1 RDX: 0000000000000000 RSI: ffffffff819e2152 RDI: 0000000000000001 RBP: ffff888045ff7680 R08: ffff8880454225c0 R09: ffffed1015d04733 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: 0000000000000000 R13: ffffea0002009088 R14: 0000000000000000 R15: dead000000000100 __read_once_size include/linux/compiler.h:193 [inline] PageTail include/linux/page-flags.h:151 [inline] PageCompound include/linux/page-flags.h:156 [inline] PageHuge+0xe2/0x170 mm/hugetlb.c:1348 page_remove_file_rmap mm/rmap.c:1218 [inline] page_remove_rmap+0x545/0x12c0 mm/rmap.c:1300 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xda2/0x1fb0 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3091 __mmput kernel/fork.c:1015 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1036 exit_mm kernel/exit.c:546 [inline] do_exit+0xb1e/0x30d0 kernel/exit.c:867 do_group_exit+0x135/0x370 kernel/exit.c:983 get_signal+0x3ec/0x1fc0 kernel/signal.c:2583 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b349 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9caf26fcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000075c078 RCX: 000000000045b349 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075c078 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075c07c R13: 00007fffe99b355f R14: 00007f9caf2709c0 R15: 000000000075c07c device ip6tnl1 entered promiscuous mode [U] `è kauditd_printk_skb: 1 callbacks suppressed audit: type=1804 audit(1580429638.027:70): pid=9143 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/22/bus" dev="sda1" ino=16617 res=1 audit: type=1804 audit(1580429638.687:71): pid=9143 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/22/bus" dev="sda1" ino=16617 res=1 audit: type=1804 audit(1580429638.957:72): pid=9203 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/23/bus" dev="sda1" ino=16626 res=1 audit: type=1804 audit(1580429639.707:73): pid=9247 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/24/bus" dev="sda1" ino=16622 res=1 audit: type=1804 audit(1580429640.037:74): pid=9270 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/24/bus" dev="sda1" ino=16609 res=1 audit: type=1804 audit(1580429640.627:75): pid=9300 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/25/bus" dev="sda1" ino=16595 res=1 NOHZ: local_softirq_pending 08 audit: type=1804 audit(1580429640.977:76): pid=9317 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/25/bus" dev="sda1" ino=16629 res=1 audit: type=1804 audit(1580429641.517:77): pid=9354 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/26/bus" dev="sda1" ino=16595 res=1 audit: type=1804 audit(1580429641.887:78): pid=9369 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/26/bus" dev="sda1" ino=16628 res=1 audit: type=1804 audit(1580429642.517:79): pid=9410 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/27/bus" dev="sda1" ino=16631 res=1 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908 in_atomic(): 1, irqs_disabled(): 0, pid: 9401, name: syz-executor.3 INFO: lockdep is turned off. Preemption disabled at: [] vcpu_enter_guest+0x7da/0x5ed0 arch/x86/kvm/x86.c:7683 CPU: 0 PID: 9401 Comm: syz-executor.3 Tainted: G W 4.19.100-syzkaller #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+0x197/0x210 lib/dump_stack.c:118 ___might_sleep.cold+0x1bd/0x1f6 kernel/sched/core.c:6192 __might_sleep+0x95/0x190 kernel/sched/core.c:6145 __mutex_lock_common kernel/locking/mutex.c:908 [inline] __mutex_lock+0xc8/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 tpk_write+0x5d/0x340 drivers/char/ttyprintk.c:123 resync_tnc+0x1b6/0x320 drivers/net/hamradio/6pack.c:522 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x64f/0x16a0 kernel/time/timer.c:1697 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:vcpu_enter_guest+0xed3/0x5ed0 arch/x86/kvm/x86.c:7790 Code: ff df 48 c1 e8 03 80 3c 10 00 0f 85 ce 44 00 00 48 83 3d 17 c0 e5 07 00 0f 84 c3 36 00 00 e8 44 6d 5e 00 fb 66 0f 1f 44 00 00 01 00 00 00 e8 c3 37 3c 00 65 8b 1d 6c 56 f5 7e 31 ff 89 de e8 RSP: 0018:ffff88804f6afa10 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: ffff8880511f0180 RCX: ffffc9000c4d9000 RDX: 0000000000028799 RSI: ffffffff810c974c RDI: ffffffff810c971a RBP: ffff88804f6afb20 R08: ffff8880511f0180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88804e6581c0 R13: ffff88804e6581ec R14: ffffff8ea81b775f R15: 0000000000000000 vcpu_run arch/x86/kvm/x86.c:7872 [inline] kvm_arch_vcpu_ioctl_run+0x457/0x16b0 arch/x86/kvm/x86.c:8072 kvm_vcpu_ioctl+0x4dc/0xf90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2667 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b349 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6356995c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f63569966d4 RCX: 000000000045b349 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000007 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000003ba R14: 00000000004c4f3c R15: 000000000075bf2c audit: type=1804 audit(1580429643.307:80): pid=9427 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/27/bus" dev="sda1" ino=16644 res=1 audit: type=1804 audit(1580429643.537:81): pid=9446 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/28/bus" dev="sda1" ino=16603 res=1 audit: type=1804 audit(1580429644.277:82): pid=9476 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/28/bus" dev="sda1" ino=16607 res=1 audit: type=1804 audit(1580429644.547:83): pid=9498 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/29/bus" dev="sda1" ino=16589 res=1 audit: type=1804 audit(1580429645.417:84): pid=9550 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir118971971/syzkaller.2R3I4m/29/bus" dev="sda1" ino=16654 res=1 audit: type=1804 audit(1580429645.477:85): pid=9560 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir162912114/syzkaller.wz5AOW/30/bus" dev="sda1" ino=16667 res=1