ci2 starts bisection 2023-04-26 04:45:27.884752835 +0000 UTC m=+57426.182027750
bisecting fixing commit since 115472395b0a9ea522ba0e106d6dfd7a73df8ba6
building syzkaller on fbf0499acc828df26995835e51d83c3a0117e716
ensuring issue is reproducible on original commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6
testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 9045695e87ab7d7c39b7916b0402e2e9ce9cd60e1615794e1b09c63a9c331cd6
all runs: crashed: INFO: task hung in blkdev_fallocate
testing current HEAD 3299fb36854fdc288bddc2c4d265f8a2e5105944
testing commit 3299fb36854fdc288bddc2c4d265f8a2e5105944 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b13ec3aa25af6038aad3189ccbb9b2ab8fb22539ea1b141deddffbfebbedbb77
all runs: crashed: INFO: task hung in blkdev_fallocate
revisions tested: 2, total time: 47m25.491094248s (build: 32m56.630348624s, test: 13m52.567745969s)
the crash still happens on HEAD
commit msg: Linux 5.15.108
crash: INFO: task hung in blkdev_fallocate
INFO: task syz-executor.5:4212 blocked for more than 143 seconds.
Not tainted 5.15.108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27488 pid: 4212 ppid: 3872 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12af/0x4550 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blkdev_fallocate+0x1ca/0x300 block/fops.c:600
vfs_fallocate+0x3ad/0x530 fs/open.c:308
ksys_fallocate fs/open.c:331 [inline]
__do_sys_fallocate fs/open.c:339 [inline]
__se_sys_fallocate fs/open.c:337 [inline]
__x64_sys_fallocate+0xa6/0xd0 fs/open.c:337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd0477800f9
RSP: 002b:00007fd046af2168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fd04789ff80 RCX: 00007fd0477800f9
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007fd0477dbb39 R08: 0000000000000000 R09: 0000000000000000
R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3e14ccaf R14: 00007fd046af2300 R15: 0000000000022000
INFO: task syz-executor.4:4216 blocked for more than 143 seconds.
Not tainted 5.15.108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27416 pid: 4216 ppid: 3879 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12af/0x4550 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blkdev_fallocate+0x1ca/0x300 block/fops.c:600
vfs_fallocate+0x3ad/0x530 fs/open.c:308
ksys_fallocate fs/open.c:331 [inline]
__do_sys_fallocate fs/open.c:339 [inline]
__se_sys_fallocate fs/open.c:337 [inline]
__x64_sys_fallocate+0xa6/0xd0 fs/open.c:337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f75ea5150f9
RSP: 002b:00007f75e9887168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f75ea634f80 RCX: 00007f75ea5150f9
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007f75ea570b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff32da8e8f R14: 00007f75e9887300 R15: 0000000000022000
INFO: task syz-executor.0:4224 blocked for more than 144 seconds.
Not tainted 5.15.108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27488 pid: 4224 ppid: 3874 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12af/0x4550 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blkdev_fallocate+0x1ca/0x300 block/fops.c:600
vfs_fallocate+0x3ad/0x530 fs/open.c:308
ksys_fallocate fs/open.c:331 [inline]
__do_sys_fallocate fs/open.c:339 [inline]
__se_sys_fallocate fs/open.c:337 [inline]
__x64_sys_fallocate+0xa6/0xd0 fs/open.c:337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fea0c79f0f9
RSP: 002b:00007fea0bb11168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fea0c8bef80 RCX: 00007fea0c79f0f9
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007fea0c7fab39 R08: 0000000000000000 R09: 0000000000000000
R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8dbadd0f R14: 00007fea0bb11300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b90ed00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3253:
#0: ffff888023706098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1c/0x60 drivers/tty/tty_ldisc.c:252
#1: ffffc90001f262e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ea/0x1880 drivers/tty/n_tty.c:2147
1 lock held by syz-executor.2/4209:
1 lock held by syz-executor.5/4212:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.4/4216:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.0/4224:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.3/4377:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.1/4386:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.2/4414:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.5/4419:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.0/4421:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.4/4423:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.3/4449:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.1/4461:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.2/4481:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.0/4527:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.5/4530:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
1 lock held by syz-executor.4/4532:
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff888010c36778 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1ca/0x300 block/fops.c:600
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x163/0x213 lib/dump_stack.c:106
nmi_cpu_backtrace+0x347/0x380 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0xf6/0x1a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xa3a/0xa80 kernel/hung_task.c:295
kthread+0x3a8/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4213 Comm: kworker/u4:5 Not tainted 5.15.108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:validate_chain+0xd0/0x58b0 kernel/locking/lockdep.c:3754
Code: 89 44 21 23 48 89 8c 24 98 00 00 00 42 c6 44 21 2b f3 48 89 b4 24 a8 00 00 00 4c 8d 6e 20 4c 89 e8 48 c1 e8 03 48 89 44 24 60 <42> 0f b6 04 20 84 c0 0f 85 a8 46 00 00 41 8b 5d 00 89 d8 25 00 80
RSP: 0018:ffffc90002dbf6e0 EFLAGS: 00000806
RAX: 1ffff11002e4f882 RBX: ffffffff8e64ade0 RCX: 1ffff920005b7efc
RDX: 0000000000000000 RSI: ffff88801727c3f0 RDI: ffff88801727b980
RBP: ffffc90002dbf990 R08: dffffc0000000000 R09: fffffbfff1d2a615
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88801727c410 R14: 1ef09494c14e416b R15: ffff88801727c410
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556e52848 CR3: 0000000067a65000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5011
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:269
rcu_read_lock include/linux/rcupdate.h:696 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0xb0/0x4a0 net/batman-adv/network-coding.c:723
process_one_work+0x799/0xe10 kernel/workqueue.c:2306
worker_thread+0x8f2/0xfb0 kernel/workqueue.c:2453
kthread+0x3a8/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298