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INFO: task hung in do_unlinkat

Status: closed as dup on 2018/10/27 13:26
Subsystems: exfat
[Documentation on labels]
Reported-by: syzbot+21f96e0f403ad21a7634@syzkaller.appspotmail.com
First crash: 2171d, last: 1934d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
INFO: rcu detected stall in sys_creat exfat 98 1928d 2019d
▶ ▼ Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in do_unlinkat (2) 1 521d 521d 0/1 auto-obsoleted due to no activity on 2023/03/27 07:50
android-49 INFO: task hung in do_unlinkat 5 2073d 2185d 0/3 auto-closed as invalid on 2019/02/24 11:49
upstream INFO: task hung in do_unlinkat (2) fs 4 1179d 1179d 0/26 auto-closed as invalid on 2021/05/17 08:41
upstream INFO: task hung in do_unlinkat (3) fs 2 898d 941d 0/26 closed as invalid on 2022/02/07 19:19
linux-4.19 INFO: task hung in do_unlinkat 1 651d 651d 0/1 auto-obsoleted due to no activity on 2022/11/17 10:56
upstream INFO: task hung in do_unlinkat (4) exfat 4 490d 596d 0/26 auto-obsoleted due to no activity on 2023/04/08 02:53

Sample crash report:
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
INFO: task syz-executor0:26871 blocked for more than 140 seconds.
      Not tainted 5.0.0-rc2+ #26
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
syz-executor0   D25912 26871   8376 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x897/0x1e60 kernel/sched/core.c:3472
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 schedule+0xfe/0x350 kernel/sched/core.c:3516
device loop0 blocksize: 4096
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
__find_get_block_slow() failed. block=1, b_blocknr=8
 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606
device loop0 blocksize: 4096
 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
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 inode_lock_nested include/linux/fs.h:792 [inline]
 do_unlinkat+0x394/0x9e0 fs/namei.c:4048
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 __do_sys_unlink fs/namei.c:4109 [inline]
 __se_sys_unlink fs/namei.c:4107 [inline]
 __x64_sys_unlink+0x42/0x50 fs/namei.c:4107
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: Bad RIP value.
RSP: 002b:00007f19dff01c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457ec9
__find_get_block_slow() failed. block=1, b_blocknr=8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19dff026d4
R13: 00000000004c3a20 R14: 00000000004dc050 R15: 00000000ffffffff
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
INFO: task syz-executor0:26875 blocked for more than 140 seconds.
device loop0 blocksize: 4096
      Not tainted 5.0.0-rc2+ #26
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor0   D27576 26875   8376 0x00000004
protocol 88fb is buggy, dev hsr_slave_0
Call Trace:
protocol 88fb is buggy, dev hsr_slave_1
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x897/0x1e60 kernel/sched/core.c:3472
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 schedule+0xfe/0x350 kernel/sched/core.c:3516
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 __rwsem_down_write_failed_common+0xa4d/0x1620 kernel/locking/rwsem-xadd.c:577
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
protocol 88fb is buggy, dev hsr_slave_0
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 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
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 inode_lock_nested include/linux/fs.h:792 [inline]
 filename_create+0x1a8/0x5a0 fs/namei.c:3635
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 user_path_create fs/namei.c:3693 [inline]
 do_mkdirat+0xcf/0x2f0 fs/namei.c:3831
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 __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
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
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
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
RSP: 002b:00007f19dfee0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457ec9
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020001540
b_state=0x00000029, b_size=512
RBP: 000000000073c0e0 R08: 0000000000000000 R09: 0000000000000000
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19dfee16d4
device loop0 blocksize: 4096
R13: 00000000004bd600 R14: 00000000004d69f8 R15: 00000000ffffffff
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096

Showing all locks held in the system:
__find_get_block_slow() failed. block=1, b_blocknr=8
1 lock held by khungtaskd/1040:
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
 #0: 0000000005a609e9 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
1 lock held by rsyslogd/8216:
 #0: 00000000f8962a9a (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8338:
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 #0: 00000000f8c70074 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
__find_get_block_slow() failed. block=1, b_blocknr=8
 #1: 000000005c9445ef (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
2 locks held by getty/8339:
__find_get_block_slow() failed. block=1, b_blocknr=8
 #0: 00000000d70082a5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
 #1: 00000000f988b06c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
2 locks held by getty/8340:
device loop0 blocksize: 4096
 #0: 00000000f9feef9a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 #1: 00000000000e854d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8341:
b_state=0x00000029, b_size=512
 #0: 000000005a6b5ad2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
 #1: 000000000d69dad5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
2 locks held by getty/8342:
device loop0 blocksize: 4096
 #0: 00000000ffb98191 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
__find_get_block_slow() failed. block=1, b_blocknr=8
 #1: 000000009d74864e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
2 locks held by getty/8343:
 #0: 000000009e8fc6ca (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
 #1: 0000000020079baf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/8344:
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 #0: 000000003c0f27d1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
 #1: 00000000ff6a3d38 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by syz-executor4/12545:
1 lock held by syz-executor4/12578:
1 lock held by syz-executor4/12621:
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
3 locks held by syz-executor0/26868:
2 locks held by syz-executor0/26871:
__find_get_block_slow() failed. block=1, b_blocknr=8
 #0: 000000000e6c1602 (sb_writers#17){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline]
 #0: 000000000e6c1602 (sb_writers#17){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:357
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
 #1: 000000008463d2fa (&sb->s_type->i_mutex_key#22/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline]
 #1: 000000008463d2fa (&sb->s_type->i_mutex_key#22/1){+.+.}, at: do_unlinkat+0x394/0x9e0 fs/namei.c:4048
device loop0 blocksize: 4096
2 locks held by syz-executor0/26875:
 #0: 000000000e6c1602 (sb_writers#17){.+.+}, at: sb_start_write include/linux/fs.h:1602 [inline]
 #0: 000000000e6c1602 (sb_writers#17){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:357
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
 #1: 000000008463d2fa (&sb->s_type->i_mutex_key#22/1){+.+.}, at: inode_lock_nested include/linux/fs.h:792 [inline]
 #1: 000000008463d2fa (&sb->s_type->i_mutex_key#22/1){+.+.}, at: filename_create+0x1a8/0x5a0 fs/namei.c:3635

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

NMI backtrace for cpu 0
CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc2+ #26
__find_get_block_slow() failed. block=1, b_blocknr=8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
b_state=0x00000029, b_size=512
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
device loop0 blocksize: 4096
 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
__find_get_block_slow() failed. block=1, b_blocknr=8
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
b_state=0x00000029, b_size=512
 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
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
 kthread+0x357/0x430 kernel/kthread.c:246
b_state=0x00000029, b_size=512
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
device loop0 blocksize: 4096
Sending NMI from CPU 0 to CPUs 1:
__find_get_block_slow() failed. block=1, b_blocknr=8
NMI backtrace for cpu 1
CPU: 1 PID: 26868 Comm: syz-executor0 Not tainted 5.0.0-rc2+ #26
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.803 msecs
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__local_bh_enable+0xa7/0x140 kernel/softirq.c:153
Code: 8b 94 24 7c 08 00 00 85 d2 74 24 65 8b 05 71 d2 b4 7e 65 8b 05 6a d2 b4 7e 48 31 d8 f6 c4 ff 74 68 f7 db 65 01 1d 59 d2 b4 7e <5b> 41 5c 5d c3 65 4c 8b 24 25 40 ee 01 00 49 8d bc 24 48 08 00 00
RSP: 0018:ffff8880ae707d38 EFLAGS: 00000083
RAX: 0000000000000007 RBX: 00000000ffffff00 RCX: 1ffffffff16ad144
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a5ec49fc
RBP: ffff8880ae707d48 R08: 0000000000000001 R09: ffffffff8a9a905d
R10: ffffffff8a9a9050 R11: 0000000000000001 R12: ffff8880a5ec4180
R13: 0000000000000002 R14: 0000000000000001 R15: dffffc0000000000
FS:  00007f19dff23700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000c75e30 CR3: 0000000056e7d000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __do_softirq+0x7b2/0xb11 kernel/softirq.c:319
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:766 [inline]
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1697 [inline]
RIP: 0010:vprintk_emit+0x84c/0x960 kernel/printk/printk.c:1930
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 ef 00 00 00 48 83 3d 54 5c 2a 08 00 74 2d e8 fd d2 19 00 48 8b bd 10 ff ff ff 57 9d <0f> 1f 44 00 00 e9 a3 fe ff ff e8 e5 d2 19 00 0f 0b e8 de d2 19 00
RSP: 0018:ffff8880946a6d60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 1ffff110128d4db2 RCX: ffffc90006058000
RDX: 0000000000040000 RSI: ffffffff81682463 RDI: 0000000000000246
RBP: ffff8880946a6e58 R08: 0000000000000006 R09: ffff8880a5ec4a98
R10: ffff8880a5ec4180 R11: 0000000000000000 R12: 0000000000000200
R13: ffffed10128d4dbc R14: 0000000000000000 R15: ffff8880946a6e30
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1958
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:1991
 __find_get_block_slow fs/buffer.c:231 [inline]
 __find_get_block fs/buffer.c:1294 [inline]
 __find_get_block.cold+0x36/0xfb fs/buffer.c:1288
 __getblk_slow fs/buffer.c:1039 [inline]
 __getblk_gfp+0x295/0xd20 fs/buffer.c:1320
 __bread_gfp+0x2f/0x300 fs/buffer.c:1354
 sb_bread include/linux/buffer_head.h:307 [inline]
 fat__get_entry+0x586/0xa40 fs/fat/dir.c:101
 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+0x1983/0x5650 fs/namei.c:3534
 do_filp_open+0x26f/0x370 fs/namei.c:3564
 do_sys_open+0x59a/0x7c0 fs/open.c:1063
 __do_sys_open fs/open.c:1081 [inline]
 __se_sys_open fs/open.c:1076 [inline]
 __x64_sys_open+0x7e/0xc0 fs/open.c:1076
 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:00007f19dff22c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000000 RSI: 0000000000141042 RDI: 00000000200001c0
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19dff236d4
R13: 00000000004f49ff R14: 00000000004d6f08 R15: 00000000ffffffff

Crashes (34):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/01/14 23:09 upstream 3719876809e7 ebacf5cb .config console log report ci-upstream-kasan-gce-selinux-root
2019/01/02 13:25 upstream 8e143b90e4d4 f0491811 .config console log report ci-upstream-kasan-gce-selinux-root
2018/10/29 02:45 upstream dad4f140edaa 9ca2afa1 .config console log report ci-upstream-kasan-gce-selinux-root
2018/10/27 03:32 upstream 18d0eae30e6a a8292de9 .config console log report ci-upstream-kasan-gce-root
2018/10/20 13:07 upstream 270b77a0f30e ecb386fe .config console log report ci-upstream-kasan-gce-smack-root
2018/10/17 06:37 upstream b955a910d7fd 1ba7fd7e .config console log report ci-upstream-kasan-gce-root
2018/10/07 13:15 upstream fb1c592cf4c9 8b311eaf .config console log report ci-upstream-kasan-gce-smack-root
2018/10/06 17:20 upstream 091a1eaa0e30 8b311eaf .config console log report ci-upstream-kasan-gce-selinux-root
2018/10/05 23:05 upstream b2e45b46d85b 8b311eaf .config console log report ci-upstream-kasan-gce-root
2018/10/05 18:16 upstream befad944e231 8b311eaf .config console log report ci-upstream-kasan-gce-selinux-root
2018/10/01 14:41 upstream 17b57b1883c1 48a50c6b .config console log report ci-upstream-kasan-gce-root
2018/10/01 02:10 upstream 17b57b1883c1 41e4b329 .config console log report ci-upstream-kasan-gce-smack-root
2018/09/23 12:35 upstream 328c6333ba3d 37079712 .config console log report ci-upstream-kasan-gce-selinux-root
2018/09/06 05:36 upstream b36fdc6853a3 873745f2 .config console log report ci-upstream-kasan-gce-root
2018/08/26 09:08 upstream 2923b27e5424 758cd203 .config console log report ci-upstream-kasan-gce-root
2018/08/18 17:48 upstream 1f7a4c73a739 db1858f6 .config console log report ci-upstream-kasan-gce-root
2018/08/14 09:36 upstream 7796916146b8 7a88b141 .config console log report ci-upstream-kasan-gce-root
2018/08/12 01:22 upstream ec0c96714e7d 7a88b141 .config console log report ci-upstream-kasan-gce-root
2018/08/05 03:35 upstream 60f5a2173632 3476a2df .config console log report ci-upstream-kasan-gce
2018/08/04 08:38 upstream 0b5b1f9a78b5 df7f6947 .config console log report ci-upstream-kasan-gce-root
2018/08/02 13:51 upstream 6b4703768268 0a7cf4ec .config console log report ci-upstream-kasan-gce-root
2018/08/01 04:22 upstream c1d61e7fe376 1477993e .config console log report ci-upstream-kasan-gce-root
2018/05/22 14:25 upstream a048a07d7f45 f48c20b8 .config console log report ci-upstream-kasan-gce-root
2018/08/04 23:37 upstream 0b5b1f9a78b5 3476a2df .config console log report ci-upstream-kasan-gce-386
2018/08/31 11:19 linux-next a880148cb2af a4718693 .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/24 17:55 linux-next e27bc174c9c6 95b5c82b .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/22 10:31 linux-next cc3d190b12b3 95b5c82b .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/19 12:39 linux-next d7857ae43dcc 2dc4378f .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/16 09:10 linux-next 3070c752f222 9ccc1d45 .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/11 21:31 linux-next 4110b42356f3 7a88b141 .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/05 02:44 linux-next 116b181bb646 3476a2df .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/04 18:42 linux-next 116b181bb646 3476a2df .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/04 16:45 linux-next 116b181bb646 3476a2df .config console log report ci-upstream-linux-next-kasan-gce-root
2018/08/03 23:22 linux-next 116b181bb646 df7f6947 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.