IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 INFO: task syz-executor093:7840 blocked for more than 140 seconds. Not tainted 4.19.48 #20 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor093 D23552 7840 7839 0x80000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x80d/0x1c70 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x21b/0x3c0 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x45b/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 __do_sys_exit_group kernel/exit.c:990 [inline] __se_sys_exit_group kernel/exit.c:988 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4461a8 Code: 20 73 70 61 63 65 20 69 6e 20 46 75 6e 63 44 42 20 66 6f 72 20 6d 75 74 65 78 20 69 6e 66 6f 20 28 6d 61 78 20 25 64 20 65 6e <74> 72 69 65 73 29 20 2d 20 69 67 6e 6f 72 69 6e 67 0a 00 00 00 00 RSP: 002b:00007ffef6927668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004461a8 RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 RBP: 00000000004ce510 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 00007ffef69276d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006e27a0 R14: 000000000000002d R15: 0000000000000007 INFO: task syz-executor093:7848 blocked for more than 140 seconds. Not tainted 4.19.48 #20 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor093 D28800 7848 7839 0x80000000 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x80d/0x1c70 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x21b/0x3c0 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x49/0xb0 kernel/locking/rwsem.c:26 exit_mm kernel/exit.c:512 [inline] do_exit+0x45b/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x399/0x1d50 kernel/signal.c:2572 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: 0033:0x447659 Code: 64 20 62 79 74 65 73 0a 00 66 69 6c 65 20 25 64 20 45 4f 46 0a 00 00 00 00 73 74 72 65 61 6d 20 77 61 73 20 72 65 71 75 65 73 <74> 65 64 20 77 69 74 68 20 7a 69 70 20 6d 6f 64 65 2c 20 62 75 74 RSP: 002b:00007ff8a1127db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000006ddc58 RCX: 0000000000447659 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006ddc58 RBP: 00000000006ddc50 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc5c R13: 00007ffef692762f R14: 00007ff8a11289c0 R15: 0000000000000005 Showing all locks held in the system: 1 lock held by khungtaskd/1032: #0: 00000000ead221b0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4435 3 locks held by rs:main Q:Reg/7688: #0: 0000000036f5ae72 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1821 [inline] #0: 0000000036f5ae72 (&rq->lock){-.-.}, at: __schedule+0x1f8/0x1c70 kernel/sched/core.c:3412 #1: 00000000ead221b0 (rcu_read_lock){....}, at: file_start_write include/linux/fs.h:2773 [inline] #1: 00000000ead221b0 (rcu_read_lock){....}, at: vfs_write+0x429/0x560 fs/read_write.c:548 #2: 00000000ead221b0 (rcu_read_lock){....}, at: fast_dput fs/dcache.c:714 [inline] #2: 00000000ead221b0 (rcu_read_lock){....}, at: dput+0x38/0x690 fs/dcache.c:833 1 lock held by rsyslogd/7690: #0: 00000000c94eb15a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767 2 locks held by getty/7812: #0: 00000000beae4f46 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 000000005d3353ea (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7813: #0: 0000000074914d06 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000a1012dad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7814: #0: 00000000cf9545b9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 000000007cac3042 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7815: #0: 000000001c53d4a6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 0000000054c12f8d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7816: #0: 00000000fb716cc5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 0000000021227abc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7817: #0: 00000000149bdeec (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000a43ee8a4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7818: #0: 00000000a1747150 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363 #1: 00000000a6160e7b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 1 lock held by syz-executor093/7840: #0: 000000006b4cf8e6 (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 000000006b4cf8e6 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fa0 kernel/exit.c:863 2 locks held by syz-executor093/7847: 1 lock held by syz-executor093/7848: #0: 000000006b4cf8e6 (&mm->mmap_sem){++++}, at: exit_mm kernel/exit.c:512 [inline] #0: 000000006b4cf8e6 (&mm->mmap_sem){++++}, at: do_exit+0x45b/0x2fa0 kernel/exit.c:863 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1032 Comm: khungtaskd Not tainted 4.19.48 #20 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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7847 Comm: syz-executor093 Not tainted 4.19.48 #20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:28 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:211 [inline] RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline] RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline] RIP: 0010:check_memory_region+0x3a/0x190 mm/kasan/kasan.c:267 Code: 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 41 55 41 54 53 0f 86 f6 00 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00 00 00 fc ff df <4d> 89 da 49 c1 e8 03 4d 8d 24 00 49 c1 ea 03 49 01 c2 4c 89 e0 49 RSP: 0018:ffff88807dbf7678 EFLAGS: 00000016 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8151ff0b RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff89ef11a8 RBP: ffff88807dbf7690 R08: ffffffff89ef11a8 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff89ef11ab R12: 0000000000000000 R13: 0000000000000000 R14: ffff88808f582580 R15: ffff88808f00b9d0 FS: 00007ff8a1149700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8a1127e78 CR3: 00000000885ae000 CR4: 00000000001406e0 Call Trace: kasan_check_write+0x14/0x20 mm/kasan/kasan.c:278 atomic_inc include/asm-generic/atomic-instrumented.h:109 [inline] __lock_acquire+0x23b/0x48f0 kernel/locking/lockdep.c:3303 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __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 perf_mmap+0x735/0x1730 kernel/events/core.c:5655 call_mmap include/linux/fs.h:1825 [inline] mmap_region+0xc2f/0x1760 mm/mmap.c:1763 do_mmap+0x8e2/0x1080 mm/mmap.c:1536 do_mmap_pgoff include/linux/mm.h:2319 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:357 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x447659 Code: e8 5c 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 db 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff8a1148da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00000000006ddc48 RCX: 0000000000447659 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000020fff000 RBP: 00000000006ddc40 R08: 0000000000000003 R09: 0000000000000000 R10: 0002000000001011 R11: 0000000000000246 R12: 00000000006ddc4c R13: 00007ffef692762f R14: 00007ff8a11499c0 R15: 0000000000000000