XFS (loop5): Invalid superblock magic number
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
Process accounting resumed
======================================================
WARNING: possible circular locking dependency detected
4.19.36 #4 Not tainted
------------------------------------------------------
syz-executor.4/29317 is trying to acquire lock:
00000000bf0b451e (&ovl_i_mutex_key[depth]){+.+.}, at: inode_lock include/linux/fs.h:738 [inline]
00000000bf0b451e (&ovl_i_mutex_key[depth]){+.+.}, at: ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:231
but task is already holding lock:
00000000a83eefe7 (&acct->lock#2){+.+.}, at: acct_get kernel/acct.c:161 [inline]
00000000a83eefe7 (&acct->lock#2){+.+.}, at: slow_acct_process kernel/acct.c:577 [inline]
00000000a83eefe7 (&acct->lock#2){+.+.}, at: acct_process+0x2e5/0x61e kernel/acct.c:605
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&acct->lock#2){+.+.}:
__mutex_lock_common kernel/locking/mutex.c:925 [inline]
__mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072
kobject: 'bonding_slave' (000000006c292722): kobject_add_internal: parent: 'bond_slave_1', set: '<NULL>'
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
bond0: Enslaving bond_slave_1 as an active interface with an up link
acct_pin_kill+0x27/0x100 kernel/acct.c:173
pin_kill+0x18f/0x860 fs/fs_pin.c:50
acct_on+0x574/0x790 kernel/acct.c:254
__do_sys_acct kernel/acct.c:286 [inline]
__se_sys_acct kernel/acct.c:273 [inline]
__x64_sys_acct+0xae/0x200 kernel/acct.c:273
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #1 (sb_writers#4){.+.+}:
percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
__sb_start_write+0x20b/0x360 fs/super.c:1387
sb_start_write include/linux/fs.h:1569 [inline]
mnt_want_write+0x3f/0xc0 fs/namespace.c:360
ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24
ovl_link+0x7c/0x2d5 fs/overlayfs/dir.c:674
vfs_link+0x7a4/0xb60 fs/namei.c:4240
do_linkat+0x550/0x770 fs/namei.c:4308
__do_sys_link fs/namei.c:4337 [inline]
__se_sys_link fs/namei.c:4335 [inline]
__x64_sys_link+0x61/0x80 fs/namei.c:4335
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #0 (&ovl_i_mutex_key[depth]){+.+.}:
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
down_write+0x38/0x90 kernel/locking/rwsem.c:70
inode_lock include/linux/fs.h:738 [inline]
ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:231
call_write_iter include/linux/fs.h:1811 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x58e/0x820 fs/read_write.c:487
__kernel_write+0x110/0x390 fs/read_write.c:506
do_acct_process+0xd37/0x1150 kernel/acct.c:520
slow_acct_process kernel/acct.c:579 [inline]
acct_process+0x568/0x61e kernel/acct.c:605
do_exit+0x17c0/0x2fa0 kernel/exit.c:866
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+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Chain exists of:
&ovl_i_mutex_key[depth] --> sb_writers#4 --> &acct->lock#2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&acct->lock#2);
lock(sb_writers#4);
lock(&acct->lock#2);
lock(&ovl_i_mutex_key[depth]);
*** DEADLOCK ***
2 locks held by syz-executor.4/29317:
#0: 00000000a83eefe7 (&acct->lock#2){+.+.}, at: acct_get kernel/acct.c:161 [inline]
#0: 00000000a83eefe7 (&acct->lock#2){+.+.}, at: slow_acct_process kernel/acct.c:577 [inline]
#0: 00000000a83eefe7 (&acct->lock#2){+.+.}, at: acct_process+0x2e5/0x61e kernel/acct.c:605
#1: 00000000c59923b9 (sb_writers#13){.+.+}, at: file_start_write_trylock include/linux/fs.h:2771 [inline]
#1: 00000000c59923b9 (sb_writers#13){.+.+}, at: do_acct_process+0xf37/0x1150 kernel/acct.c:517
stack backtrace:
CPU: 1 PID: 29317 Comm: syz-executor.4 Not tainted 4.19.36 #4
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
print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221
check_prev_add kernel/locking/lockdep.c:1861 [inline]
check_prevs_add kernel/locking/lockdep.c:1974 [inline]
validate_chain kernel/locking/lockdep.c:2415 [inline]
__lock_acquire+0x2e6d/0x48f0 kernel/locking/lockdep.c:3411
lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
down_write+0x38/0x90 kernel/locking/rwsem.c:70
inode_lock include/linux/fs.h:738 [inline]
ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:231
call_write_iter include/linux/fs.h:1811 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x58e/0x820 fs/read_write.c:487
__kernel_write+0x110/0x390 fs/read_write.c:506
do_acct_process+0xd37/0x1150 kernel/acct.c:520
slow_acct_process kernel/acct.c:579 [inline]
acct_process+0x568/0x61e kernel/acct.c:605
do_exit+0x17c0/0x2fa0 kernel/exit.c:866
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+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff9a059778 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000458c29
RDX: 00000000004129e1 RSI: fffffffffffffff7 RDI: 0000000000000000
RBP: 0000000000000000 R08: 000000000981a614 R09: 00007fff9a0597d0
R10: ffffffff8100a141 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9a0597d0 R14: 0000000000000000 R15: 00007fff9a0597e0
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'bonding_slave' (000000006c292722): kobject_cleanup, parent 000000008bce4de5
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'bonding_slave' (000000006c292722): does not have a release() function, it is broken and must be fixed.
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'bonding_slave' (000000006c292722): auto cleanup kobject_del
XFS (loop5): Invalid superblock magic number
kobject: 'bonding_slave': free name
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
bond0: Releasing backup interface bond_slave_1
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
Process accounting resumed
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'bonding_slave' (000000002a883ea2): kobject_add_internal: parent: 'bond_slave_1', set: '<NULL>'
bond0: Enslaving bond_slave_1 as an active interface with an up link
kobject: 'bonding_slave' (000000002a883ea2): kobject_cleanup, parent 000000008bce4de5
kobject: 'bonding_slave' (000000002a883ea2): does not have a release() function, it is broken and must be fixed.
kobject: 'bonding_slave' (000000002a883ea2): auto cleanup kobject_del
kobject: 'bonding_slave': free name
bond0: Releasing backup interface bond_slave_1
kobject: 'bonding_slave' (00000000524412e0): kobject_add_internal: parent: 'bond_slave_1', set: '<NULL>'
bond0: Enslaving bond_slave_1 as an active interface with an up link
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
XFS (loop5): Invalid superblock magic number
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
Process accounting resumed
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
audit: type=1400 audit(1556030741.913:207): avc: denied { map } for pid=29704 comm="syz-executor.5" path=2F616E6F6E5F6875676570616765202864656C6574656429 dev="hugetlbfs" ino=83819 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:hugetlbfs_t:s0 tclass=file permissive=1
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
net_ratelimit: 22 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
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
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
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000bdcf6cea): kobject_uevent_env
kobject: 'loop4' (00000000bdcf6cea): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000bfe3fe37): kobject_uevent_env
kobject: 'loop5' (00000000bfe3fe37): fill_kobj_path: path = '/devices/virtual/block/loop5'
net_ratelimit: 18 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
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