IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
======================================================
WARNING: possible circular locking dependency detected
4.14.292-syzkaller #0 Not tainted
------------------------------------------------------
modprobe/9547 is trying to acquire lock:
(&(&gsm->tx_lock)->rlock){-...}, at: [<ffffffff8356eece>] gsmld_write_wakeup+0x4e/0xd0 drivers/tty/n_gsm.c:2490
but task is already holding lock:
(&port_lock_key){-.-.}, at: [<ffffffff835c4660>] serial8250_handle_irq.part.0+0x20/0x330 drivers/tty/serial/8250/8250_port.c:1891
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&port_lock_key){-.-.}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
uart_write_room+0xd5/0x340 drivers/tty/serial/serial_core.c:643
tty_write_room+0x61/0x80 drivers/tty/tty_ioctl.c:78
gsmld_write+0x69/0x120 drivers/tty/n_gsm.c:2546
do_tty_write drivers/tty/tty_io.c:959 [inline]
tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
__vfs_write+0xe4/0x630 fs/read_write.c:480
__kernel_write+0xf5/0x330 fs/read_write.c:501
write_pipe_buf+0x143/0x1c0 fs/splice.c:797
splice_from_pipe_feed fs/splice.c:502 [inline]
__splice_from_pipe+0x326/0x7a0 fs/splice.c:626
splice_from_pipe fs/splice.c:661 [inline]
default_file_splice_write+0xc5/0x150 fs/splice.c:809
do_splice_from fs/splice.c:851 [inline]
direct_splice_actor+0x115/0x160 fs/splice.c:1016
splice_direct_to_actor+0x25a/0x700 fs/splice.c:971
do_splice_direct+0x164/0x210 fs/splice.c:1059
do_sendfile+0x47f/0xb30 fs/read_write.c:1441
SYSC_sendfile64 fs/read_write.c:1502 [inline]
SyS_sendfile64+0xff/0x110 fs/read_write.c:1488
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
-> #0 (&(&gsm->tx_lock)->rlock){-...}:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
gsmld_write_wakeup+0x4e/0xd0 drivers/tty/n_gsm.c:2490
tty_wakeup+0xc3/0xf0 drivers/tty/tty_io.c:533
tty_port_default_wakeup+0x26/0x40 drivers/tty/tty_port.c:49
serial8250_tx_chars+0x3fe/0xc70 drivers/tty/serial/8250/8250_port.c:1828
serial8250_handle_irq.part.0+0x28d/0x330 drivers/tty/serial/8250/8250_port.c:1915
serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1888 [inline]
serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1931
serial8250_interrupt+0xf3/0x210 drivers/tty/serial/8250/8250_core.c:129
__handle_irq_event_percpu+0xee/0x7f0 kernel/irq/handle.c:147
handle_irq_event_percpu kernel/irq/handle.c:187 [inline]
handle_irq_event+0xed/0x240 kernel/irq/handle.c:204
handle_edge_irq+0x224/0xc40 kernel/irq/chip.c:770
generic_handle_irq_desc include/linux/irqdesc.h:159 [inline]
handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87
do_IRQ+0x93/0x1d0 arch/x86/kernel/irq.c:230
ret_from_intr+0x0/0x1e
arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:4001
down_read_trylock kernel/locking/rwsem.c:40 [inline]
down_read_trylock+0x4e/0x90 kernel/locking/rwsem.c:35
__do_page_fault+0x2b9/0xad0 arch/x86/mm/fault.c:1371
page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1123
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&port_lock_key);
lock(&(&gsm->tx_lock)->rlock);
lock(&port_lock_key);
lock(&(&gsm->tx_lock)->rlock);
*** DEADLOCK ***
4 locks held by modprobe/9547:
#0: (&mm->mmap_sem){++++}, at: [<ffffffff812413a9>] __do_page_fault+0x2b9/0xad0 arch/x86/mm/fault.c:1371
#1: (&(&i->lock)->rlock){-.-.}, at: [<ffffffff835b19ea>] spin_lock include/linux/spinlock.h:317 [inline]
#1: (&(&i->lock)->rlock){-.-.}, at: [<ffffffff835b19ea>] serial8250_interrupt+0x3a/0x210 drivers/tty/serial/8250/8250_core.c:119
#2: (&port_lock_key){-.-.}, at: [<ffffffff835c4660>] serial8250_handle_irq.part.0+0x20/0x330 drivers/tty/serial/8250/8250_port.c:1891
#3: (&tty->ldisc_sem){++++}, at: [<ffffffff83556cfb>] tty_ldisc_ref+0x1b/0x80 drivers/tty/tty_ldisc.c:305
stack backtrace:
CPU: 1 PID: 9547 Comm: modprobe Not tainted 4.14.292-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258
check_prev_add kernel/locking/lockdep.c:1905 [inline]
check_prevs_add kernel/locking/lockdep.c:2022 [inline]
validate_chain kernel/locking/lockdep.c:2464 [inline]
__lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160
gsmld_write_wakeup+0x4e/0xd0 drivers/tty/n_gsm.c:2490
tty_wakeup+0xc3/0xf0 drivers/tty/tty_io.c:533
tty_port_default_wakeup+0x26/0x40 drivers/tty/tty_port.c:49
serial8250_tx_chars+0x3fe/0xc70 drivers/tty/serial/8250/8250_port.c:1828
serial8250_handle_irq.part.0+0x28d/0x330 drivers/tty/serial/8250/8250_port.c:1915
serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1888 [inline]
serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1931
serial8250_interrupt+0xf3/0x210 drivers/tty/serial/8250/8250_core.c:129
__handle_irq_event_percpu+0xee/0x7f0 kernel/irq/handle.c:147
handle_irq_event_percpu kernel/irq/handle.c:187 [inline]
handle_irq_event+0xed/0x240 kernel/irq/handle.c:204
handle_edge_irq+0x224/0xc40 kernel/irq/chip.c:770
generic_handle_irq_desc include/linux/irqdesc.h:159 [inline]
handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87
do_IRQ+0x93/0x1d0 arch/x86/kernel/irq.c:230
common_interrupt+0x93/0x93 arch/x86/entry/entry_64.S:576
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:4001
RSP: 0000:ffff88806ffe7e38 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffc8
RAX: 1ffffffff11e1359 RBX: ffff8880a9796200 RCX: bd6f10cc5c7f380f
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286
RBP: ffff8880a88d5a50 R08: 0000000000000001 R09: 0000000000058405
R10: ffff8880a9796a88 R11: ffff8880a9796200 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
down_read_trylock kernel/locking/rwsem.c:40 [inline]
down_read_trylock+0x4e/0x90 kernel/locking/rwsem.c:35
__do_page_fault+0x2b9/0xad0 arch/x86/mm/fault.c:1371
page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1123
RIP: f867678c:0x55df851ab150
RSP: 0000:000055df851ab240 EFLAGS: 7ffdf867678c
attempt to access beyond end of device
loop2: rw=1, want=128, limit=15
attempt to access beyond end of device
loop2: rw=1, want=128, limit=15
attempt to access beyond end of device
loop2: rw=1, want=128, limit=15
attempt to access beyond end of device
loop2: rw=1, want=128, limit=15
attempt to access beyond end of device
loop3: rw=1, want=128, limit=15
attempt to access beyond end of device
loop2: rw=1, want=128, limit=15
attempt to access beyond end of device
loop3: rw=1, want=128, limit=15
attempt to access beyond end of device
loop2: rw=1, want=128, limit=15
attempt to access beyond end of device
loop3: rw=1, want=128, limit=15
REISERFS (device loop5): found reiserfs format "3.5" with non-standard journal
REISERFS (device loop5): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop5): checking transaction log (loop5)
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[1 2 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
IPVS: ftp: loaded support on port[0] = 21
REISERFS error (device loop5): vs-5150 search_by_key: invalid format found in block 531. Fsck?
REISERFS (device loop5): Remounting filesystem read-only
REISERFS error (device loop5): vs-13070 reiserfs_read_locked_inode: i/o failure occurred trying to find stat data of [1 2 0x0 SD]
REISERFS warning (device loop5): reiserfs_fill_super: corrupt root inode, run fsck
REISERFS (device loop5): found reiserfs format "3.5" with non-standard journal
REISERFS (device loop5): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop5): checking transaction log (loop5)
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[1 2 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop5): vs-5150 search_by_key: invalid format found in block 531. Fsck?
REISERFS (device loop5): Remounting filesystem read-only
REISERFS error (device loop5): vs-13070 reiserfs_read_locked_inode: i/o failure occurred trying to find stat data of [1 2 0x0 SD]
REISERFS warning (device loop5): reiserfs_fill_super: corrupt root inode, run fsck
REISERFS (device loop5): found reiserfs format "3.5" with non-standard journal
REISERFS (device loop5): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop5): checking transaction log (loop5)
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[1 2 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop5): vs-5150 search_by_key: invalid format found in block 531. Fsck?
REISERFS (device loop5): Remounting filesystem read-only
REISERFS error (device loop5): vs-13070 reiserfs_read_locked_inode: i/o failure occurred trying to find stat data of [1 2 0x0 SD]
REISERFS warning (device loop5): reiserfs_fill_super: corrupt root inode, run fsck
REISERFS (device loop5): found reiserfs format "3.5" with non-standard journal
REISERFS (device loop5): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop5): checking transaction log (loop5)
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[1 2 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop5): vs-5150 search_by_key: invalid format found in block 531. Fsck?
REISERFS (device loop5): Remounting filesystem read-only
REISERFS error (device loop5): vs-13070 reiserfs_read_locked_inode: i/o failure occurred trying to find stat data of [1 2 0x0 SD]
REISERFS warning (device loop5): reiserfs_fill_super: corrupt root inode, run fsck
hfsplus: invalid uid specified
hfsplus: unable to parse mount options
hfsplus: invalid uid specified
hfsplus: unable to parse mount options
hfsplus: invalid uid specified
hfsplus: unable to parse mount options
hfsplus: invalid uid specified
hfsplus: unable to parse mount options
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero
xt_HMARK: hash modulus can't be zero