team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device  removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves INFO: task syz-executor0:15634 blocked for more than 140 seconds. Not tainted 4.20.0+ #9 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D26648 15634 32101 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e90 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 d_wait_lookup fs/dcache.c:2408 [inline] d_alloc_parallel+0x143c/0x1f10 fs/dcache.c:2490 lookup_open+0x57c/0x1b80 fs/namei.c:3147 do_last fs/namei.c:3324 [inline] path_openat+0x25fd/0x5650 fs/namei.c:3534 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_sys_open+0x59a/0x7c0 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: Bad RIP value. RSP: 002b:00007f79cb036c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000002 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f79cb0376d4 R13: 00000000004c3cde R14: 00000000004d6b68 R15: 00000000ffffffff INFO: task syz-executor0:15658 blocked for more than 140 seconds. Not tainted 4.20.0+ #9 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27128 15658 32101 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e90 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 d_wait_lookup fs/dcache.c:2408 [inline] d_alloc_parallel+0x143c/0x1f10 fs/dcache.c:2490 lookup_open+0x57c/0x1b80 fs/namei.c:3147 do_last fs/namei.c:3324 [inline] path_openat+0x25fd/0x5650 fs/namei.c:3534 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_sys_open+0x59a/0x7c0 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: Bad RIP value. RSP: 002b:00007f79caff4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000009 RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f79caff56d4 R13: 00000000004c3cde R14: 00000000004d6b68 R15: 00000000ffffffff INFO: task syz-executor0:15659 blocked for more than 140 seconds. Not tainted 4.20.0+ #9 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27128 15659 32101 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e90 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 d_wait_lookup fs/dcache.c:2408 [inline] d_alloc_parallel+0x143c/0x1f10 fs/dcache.c:2490 lookup_open+0x57c/0x1b80 fs/namei.c:3147 do_last fs/namei.c:3324 [inline] path_openat+0x25fd/0x5650 fs/namei.c:3534 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_sys_open+0x59a/0x7c0 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: Bad RIP value. RSP: 002b:00007f79cafd3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000002 RSI: 0000000020000200 RDI: 0000000000000009 RBP: 000000000073c180 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f79cafd46d4 R13: 00000000004c3cde R14: 00000000004d6b68 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1039: #0: 000000005c243bf5 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/8021: #0: 000000007fc332a8 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 2 locks held by getty/8135: #0: 000000002c10cfb4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000014a160d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8136: #0: 00000000cd2b82b0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005d95e08a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8137: #0: 0000000015844fcb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000088c4ef8b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8138: #0: 000000007d4c72c5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009382d423 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8139: #0: 000000007f3e6d3f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a593ceb7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8140: #0: 000000008082728e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a141aa27 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8141: #0: 00000000eb790df9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a9dddcb8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 4 locks held by syz-executor0/15629: 2 locks held by syz-executor0/15634: #0: 000000003be226b8 (sb_writers#12){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline] #0: 000000003be226b8 (sb_writers#12){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: do_last fs/namei.c:3323 [inline] #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: path_openat+0x25e1/0x5650 fs/namei.c:3534 2 locks held by syz-executor0/15658: #0: 000000003be226b8 (sb_writers#12){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline] #0: 000000003be226b8 (sb_writers#12){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: do_last fs/namei.c:3323 [inline] #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: path_openat+0x25e1/0x5650 fs/namei.c:3534 2 locks held by syz-executor0/15659: #0: 000000003be226b8 (sb_writers#12){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline] #0: 000000003be226b8 (sb_writers#12){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: do_last fs/namei.c:3323 [inline] #1: 00000000e9c4028c (&sb->s_type->i_mutex_key#19){++++}, at: path_openat+0x25e1/0x5650 fs/namei.c:3534 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1039 Comm: khungtaskd Not tainted 4.20.0+ #9 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+0x1db/0x2d0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:205 [inline] watchdog+0xbd2/0x10b0 kernel/hung_task.c:289 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.074 msecs NMI backtrace for cpu 0 CPU: 0 PID: 15629 Comm: syz-executor0 Not tainted 4.20.0+ #9 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x50 kernel/kcov.c:101 Code: 85 68 fe ff ff e9 85 df 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 68 f8 7f 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 83 RSP: 0018:ffff88808c4eeef8 EFLAGS: 00000046 RAX: ffff8880625d8080 RBX: ffff88808ad481f8 RCX: ffffc90005a63000 RDX: 0000000000040000 RSI: ffffffff8390fcfe RDI: ffffffff8855f800 RBP: ffff88808c4eeef8 R08: ffff8880625d8080 R09: fffff94000479c7f R10: fffff94000479c7e R11: ffffea00023ce3f7 R12: ffffffff8855f800 R13: 0000000000000195 R14: dffffc0000000000 R15: 000000000000000d FS: 00007f79cb058700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000457e9f CR3: 0000000086a7b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __this_cpu_preempt_check+0xe/0x30 lib/smp_processor_id.c:62 lookup_bh_lru fs/buffer.c:1261 [inline] __find_get_block+0x16a/0xf20 fs/buffer.c:1290 __getblk_slow fs/buffer.c:1039 [inline] __getblk_gfp+0x295/0xd20 fs/buffer.c:1320 __getblk include/linux/buffer_head.h:380 [inline] __breadahead+0x86/0x160 fs/buffer.c:1330 sb_breadahead include/linux/buffer_head.h:319 [inline] fat_dir_readahead fs/fat/dir.c:66 [inline] fat__get_entry+0x4b5/0xa40 fs/fat/dir.c:99 fat_get_entry fs/fat/dir.c:129 [inline] fat_search_long+0x345/0x17d0 fs/fat/dir.c:479 vfat_find+0x10e/0x140 fs/fat/namei_vfat.c:697 vfat_lookup+0x10a/0x6b0 fs/fat/namei_vfat.c:711 lookup_open+0x726/0x1b80 fs/namei.c:3213 do_last fs/namei.c:3324 [inline] path_openat+0x25fd/0x5650 fs/namei.c:3534 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_sys_open+0x59a/0x7c0 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f79cb057c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f79cb0586d4 R13: 00000000004c3cde R14: 00000000004d6b68 R15: 00000000ffffffff