protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 INFO: task syz-executor0:20830 blocked for more than 140 seconds. Not tainted 4.20.0+ #13 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27064 20830 19782 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 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+0x9b/0x120 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 walk_component+0x8e5/0x26a0 fs/namei.c:1810 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141 link_path_walk fs/namei.c:2072 [inline] path_parentat.isra.0+0x51/0x160 fs/namei.c:2366 filename_parentat.isra.0+0x268/0x580 fs/namei.c:2388 filename_create+0xbd/0x5a0 fs/namei.c:3618 user_path_create fs/namei.c:3693 [inline] do_mkdirat+0xcf/0x2f0 fs/namei.c:3831 __do_sys_mkdir fs/namei.c:3855 [inline] __se_sys_mkdir fs/namei.c:3853 [inline] __x64_sys_mkdir+0x5c/0x80 fs/namei.c:3853 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe net_ratelimit: 20 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 RIP: 0033:0x457ec9 protocol 88fb is buggy, dev hsr_slave_1 Code: Bad RIP value. RSP: 002b:00007fbca578bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbca578c6d4 R13: 00000000004bd600 R14: 00000000004d6820 R15: 00000000ffffffff INFO: task syz-executor0:20834 blocked for more than 140 seconds. Not tainted 4.20.0+ #13 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D26952 20834 19782 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 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+0x9b/0x120 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x4a/0x80 fs/namei.c:1687 walk_component+0x8e5/0x26a0 fs/namei.c:1810 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141 link_path_walk fs/namei.c:2269 [inline] path_lookupat.isra.0+0xe3/0xba0 fs/namei.c:2317 filename_lookup+0x27a/0x530 fs/namei.c:2348 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 user_path_at_empty+0x43/0x50 fs/namei.c:2608 user_path_at include/linux/namei.h:57 [inline] path_setxattr+0xcc/0x230 fs/xattr.c:464 __do_sys_setxattr fs/xattr.c:484 [inline] __se_sys_setxattr fs/xattr.c:480 [inline] __x64_sys_setxattr+0xc4/0x150 fs/xattr.c:480 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:00007fbca576ac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457ec9 RDX: 0000000020000280 RSI: 00000000200001c0 RDI: 0000000020000140 RBP: 000000000073c040 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 00007fbca576b6d4 R13: 00000000004be6ec R14: 00000000004dab40 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1040: #0: 000000006300107e (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7960: #0: 00000000eb588931 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 2 locks held by getty/8050: #0: 00000000bfce8b6e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000002ea23a8a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8051: #0: 0000000084eae9fb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000562e7800 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8052: #0: 0000000047603eac (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000f83fbf18 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8053: protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 #0: 000000003f65d3e9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000050f7283d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8054: #0: 0000000086c76c9b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000061549653 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8055: #0: 000000002a1c5f7e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000004edfd488 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8056: #0: 000000009d2ca1c0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000fbd48cbf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 1 lock held by syz-executor3/27211: 1 lock held by syz-executor3/27270: 1 lock held by syz-executor2/27271: 1 lock held by syz-executor3/27310: 3 locks held by syz-executor0/20827: 1 lock held by syz-executor0/20830: #0: 0000000024457e5b (&sb->s_type->i_mutex_key#26){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 0000000024457e5b (&sb->s_type->i_mutex_key#26){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 1 lock held by syz-executor0/20834: #0: 0000000024457e5b (&sb->s_type->i_mutex_key#26){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 0000000024457e5b (&sb->s_type->i_mutex_key#26){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 1 lock held by syz-executor0/20835: #0: 0000000024457e5b (&sb->s_type->i_mutex_key#26){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] #0: 0000000024457e5b (&sb->s_type->i_mutex_key#26){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1040 Comm: khungtaskd Not tainted 4.20.0+ #13 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:203 [inline] watchdog+0xbbb/0x1170 kernel/hung_task.c:287 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: 1.005 msecs NMI backtrace for cpu 0 CPU: 0 PID: 27271 Comm: syz-executor2 Not tainted 4.20.0+ #13 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:102 [inline] RIP: 0010:do_raw_spin_unlock+0x193/0x330 kernel/locking/spinlock_debug.c:134 Code: 01 00 00 65 8b 05 cd 2e 9c 7e 41 39 44 24 08 0f 85 d4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 <0f> 85 85 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 49 c7 44 RSP: 0018:ffff888084277510 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 1ffff1101084eea3 RCX: ffffffff81655190 RDX: 1ffff11042c95833 RSI: 0000000000000004 RDI: 1ffff1101084eea7 RBP: ffff888084277598 R08: 1ffff11042c95831 R09: ffffed1042c95832 R10: ffffed1042c95831 R11: ffff8882164ac18b R12: ffff8882164ac188 R13: ffff8882164ac190 R14: ffff8882164ac198 R15: ffff888058cee900 FS: 00007f2b8cb0d700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000000a88c8000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock+0x23/0x50 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:369 [inline] __snd_pcm_stream_unlock_mode sound/core/pcm_native.c:138 [inline] __snd_pcm_stream_unlock_mode+0xb8/0x150 sound/core/pcm_native.c:131 snd_pcm_stream_unlock_irq+0x1d/0x30 sound/core/pcm_native.c:202 __snd_pcm_lib_xfer+0xe71/0x1f5b sound/core/pcm_lib.c:2258 snd_pcm_oss_read3+0x1ca/0x420 sound/core/oss/pcm_oss.c:1274 io_capture_transfer+0x280/0x330 sound/core/oss/io.c:73 snd_pcm_plug_read_transfer+0x1da/0x3b0 sound/core/oss/pcm_plugin.c:651 snd_pcm_oss_read2+0x22b/0x460 sound/core/oss/pcm_oss.c:1474 snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1512 [inline] snd_pcm_oss_read+0x4bb/0x7f0 sound/core/oss/pcm_oss.c:2752 __vfs_read+0x116/0xb20 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0x105/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 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:00007f2b8cb0cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000008 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2b8cb0d6d4 R13: 00000000004c4986 R14: 00000000004d7f90 R15: 00000000ffffffff