net_ratelimit: 16 callbacks suppressed
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-executor3:19855 blocked for more than 140 seconds.
      Not tainted 4.20.0+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D25832 19855   7863 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
 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write_nested+0xa9/0x130 kernel/locking/rwsem.c:195
 inode_lock_nested include/linux/fs.h:792 [inline]
 filename_create+0x1a8/0x5a0 fs/namei.c:3635
 user_path_create fs/namei.c:3693 [inline]
 do_mkdirat+0xcf/0x2f0 fs/namei.c:3831
 __do_sys_mkdirat fs/namei.c:3850 [inline]
 __se_sys_mkdirat fs/namei.c:3848 [inline]
 __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3848
 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:00007fbedccf3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000100000000 RSI: 00000000200004c0 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbedccf46d4
R13: 00000000004c398b R14: 00000000004d64f0 R15: 00000000ffffffff
INFO: task syz-executor3:19903 blocked for more than 140 seconds.
      Not tainted 4.20.0+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D25672 19903   7863 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
 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577
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
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write_nested+0xa9/0x130 kernel/locking/rwsem.c:195
 inode_lock_nested include/linux/fs.h:792 [inline]
 filename_create+0x1a8/0x5a0 fs/namei.c:3635
 user_path_create fs/namei.c:3693 [inline]
 do_mkdirat+0xcf/0x2f0 fs/namei.c:3831
 __do_sys_mkdirat fs/namei.c:3850 [inline]
 __se_sys_mkdirat fs/namei.c:3848 [inline]
 __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3848
 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:00007fbedcc90c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000000 RSI: 0000000020000580 RDI: 000000000000000a
RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbedcc916d4
R13: 00000000004c398b R14: 00000000004d64f0 R15: 00000000ffffffff
INFO: task syz-executor3:19904 blocked for more than 140 seconds.
      Not tainted 4.20.0+ #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D27560 19904   7863 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
 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606
 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write_nested+0xa9/0x130 kernel/locking/rwsem.c:195
 inode_lock_nested include/linux/fs.h:792 [inline]
 filename_create+0x1a8/0x5a0 fs/namei.c:3635
 user_path_create fs/namei.c:3693 [inline]
 do_mkdirat+0xcf/0x2f0 fs/namei.c:3831
 __do_sys_mkdirat fs/namei.c:3850 [inline]
 __se_sys_mkdirat fs/namei.c:3848 [inline]
 __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3848
 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:00007fbedcc6fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000100000000 RSI: 00000000200004c0 RDI: 000000000000000a
RBP: 000000000073c180 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbedcc706d4
R13: 00000000004c398b R14: 00000000004d64f0 R15: 00000000ffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/1041:
 #0: 0000000094cb7a6a (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389
1 lock held by rsyslogd/7729:
 #0: 000000009ef0a930 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795
2 locks held by getty/7819:
 #0: 000000005b6ef556 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000986b2375 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/7820:
 #0: 00000000971b7960 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000f133aea5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/7821:
 #0: 000000009e336904 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 0000000029843588 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/7822:
 #0: 000000003fd92e19 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000b1c116bc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/7823:
 #0: 00000000c716d6e3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 00000000c7a8ccf4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/7824:
 #0: 0000000098a55767 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 0000000082afa082 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/7825:
 #0: 000000001e87bb50 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 000000004bd6e2df (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by syz-executor3/19855:
 #0: 0000000069ecf09d (sb_writers#18){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline]
 #0: 0000000069ecf09d (sb_writers#18){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
 #1: 0000000077b58812 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline]
 #1: 0000000077b58812 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: filename_create+0x1a8/0x5a0 fs/namei.c:3635
4 locks held by syz-executor3/19871:
2 locks held by syz-executor3/19903:
 #0: 0000000069ecf09d (sb_writers#18){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline]
 #0: 0000000069ecf09d (sb_writers#18){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
 #1: 0000000077b58812 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline]
 #1: 0000000077b58812 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: filename_create+0x1a8/0x5a0 fs/namei.c:3635
2 locks held by syz-executor3/19904:
 #0: 0000000069ecf09d (sb_writers#18){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline]
 #0: 0000000069ecf09d (sb_writers#18){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
 #1: 0000000077b58812 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline]
 #1: 0000000077b58812 (&sb->s_type->i_mutex_key#27/1){+.+.}, at: filename_create+0x1a8/0x5a0 fs/namei.c:3635

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1041 Comm: khungtaskd Not tainted 4.20.0+ #2
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: 1.229 msecs
NMI backtrace for cpu 0
CPU: 0 PID: 19871 Comm: syz-executor3 Not tainted 4.20.0+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x20 kernel/kcov.c:173
Code: 5d c3 0f 1f 84 00 00 00 00 00 55 48 89 f2 48 89 fe bf 06 00 00 00 48 89 e5 48 8b 4d 08 e8 18 ff ff ff 5d c3 66 0f 1f 44 00 00 <55> 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 48 89 e5 48 8b 4d 08 e8
RSP: 0018:ffff88804c8eefc0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffff1100991dde9
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88804c8ef210 R08: 1ffff11015cc5b8f R09: ffffed1015cc5b90
R10: ffffed1015cc5b8f R11: ffff8880ae62dc7b R12: 0000000000000195
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88804c8ef1e8
FS:  00007fbedccb2700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4b82ba3792 CR3: 000000009fe0d000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 pagecache_get_page+0xe6/0x1020 mm/filemap.c:1579
 find_get_page_flags include/linux/pagemap.h:278 [inline]
 __find_get_block_slow fs/buffer.c:205 [inline]
 __find_get_block fs/buffer.c:1294 [inline]
 __find_get_block+0x615/0xf20 fs/buffer.c:1288
 __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_hash+0x122/0x190 fs/namei.c:1546
 filename_create+0x1d6/0x5a0 fs/namei.c:3636
 user_path_create fs/namei.c:3693 [inline]
 do_mkdirat+0xcf/0x2f0 fs/namei.c:3831
 __do_sys_mkdirat fs/namei.c:3850 [inline]
 __se_sys_mkdirat fs/namei.c:3848 [inline]
 __x64_sys_mkdirat+0x76/0xb0 fs/namei.c:3848
 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:00007fbedccb1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000000 RSI: 0000000020000580 RDI: 0000000000000005
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbedccb26d4
R13: 00000000004c398b R14: 00000000004d64f0 R15: 00000000ffffffff