ci2 starts bisection 2023-06-28 01:43:53.888983354 +0000 UTC m=+125852.979331230
bisecting fixing commit since 1fe619a7d25218e9b9fdcce9fcac6a05cd62abed
building syzkaller on cf1845599c0bdab59c69518eaa0ecb960ec7ddf0
ensuring issue is reproducible on original commit 1fe619a7d25218e9b9fdcce9fcac6a05cd62abed
testing commit 1fe619a7d25218e9b9fdcce9fcac6a05cd62abed gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e461f37bca428c5d14e9cedbf7c0e2050e8eddc06759c1ecc11ab8a864063323
all runs: crashed: INFO: task hung in blkdev_fallocate
testing current HEAD f67653019430833d5003f16817d7fa85272a6a76
testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0e4c5d10b856bd6552630d3dd6b81eb5a8ba8c62a7dd33d7c1f481ade38900f6
all runs: crashed: INFO: task hung in blkdev_fallocate
crash still not fixed/happens on the oldest tested release
revisions tested: 2, total time: 1h6m35.110868572s (build: 53m46.054598856s, test: 11m36.68464428s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 5.15.118
crash: INFO: task hung in blkdev_fallocate
INFO: task syz-executor.3:4194 blocked for more than 143 seconds.
Not tainted 5.15.118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28600 pid: 4194 ppid: 3874 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0xaf0/0x54c0 kernel/sched/core.c:6372
schedule+0x10a/0x240 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0x6a5/0x1230 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write_common kernel/locking/rwsem.c:1281 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x137/0x150 kernel/locking/rwsem.c:1542
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
vfs_fallocate+0x2a5/0xbb0 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+0xb0/0x100 fs/open.c:337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f862d6d0169
RSP: 002b:00007f862ca42168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f862d7eff80 RCX: 00007f862d6d0169
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00007f862d72bca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc66b0476f R14: 00007f862ca42300 R15: 0000000000022000
INFO: task syz-executor.5:4204 blocked for more than 143 seconds.
Not tainted 5.15.118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28600 pid: 4204 ppid: 3879 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0xaf0/0x54c0 kernel/sched/core.c:6372
schedule+0x10a/0x240 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0x6a5/0x1230 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write_common kernel/locking/rwsem.c:1281 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x137/0x150 kernel/locking/rwsem.c:1542
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
vfs_fallocate+0x2a5/0xbb0 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+0xb0/0x100 fs/open.c:337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fc65907c169
RSP: 002b:00007fc6583ee168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fc65919bf80 RCX: 00007fc65907c169
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00007fc6590d7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb9ccf1af R14: 00007fc6583ee300 R15: 0000000000022000
INFO: task syz-executor.1:4206 blocked for more than 144 seconds.
Not tainted 5.15.118-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28600 pid: 4206 ppid: 3870 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0xaf0/0x54c0 kernel/sched/core.c:6372
schedule+0x10a/0x240 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0x6a5/0x1230 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write_common kernel/locking/rwsem.c:1281 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x137/0x150 kernel/locking/rwsem.c:1542
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
vfs_fallocate+0x2a5/0xbb0 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+0xb0/0x100 fs/open.c:337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f3ac3aa9169
RSP: 002b:00007f3ac2e1b168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f3ac3bc8f80 RCX: 00007f3ac3aa9169
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00007f3ac3b04ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe026d87cf R14: 00007f3ac2e1b300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b17c8c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x272 kernel/locking/lockdep.c:6451
3 locks held by kworker/u4:3/596:
2 locks held by getty/3255:
#0: ffff888023a8f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900027b32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb1a/0x1040 drivers/tty/n_tty.c:2147
1 lock held by syz-executor.0/4177:
1 lock held by syz-executor.3/4194:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.5/4204:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.1/4206:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.2/4364:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.4/4395:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.0/4403:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.3/4417:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.5/4419:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.1/4421:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.2/4439:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.4/4462:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.0/4487:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.3/4505:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.1/4526:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
1 lock held by syz-executor.5/4528:
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff88801109acb8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1b3/0x3e0 block/fops.c:600
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x18f/0x1d0 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+0x8a6/0xba0 kernel/hung_task.c:295
kthread+0x38b/0x460 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 596 Comm: kworker/u4:3 Not tainted 5.15.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_lock.part.0+0x160/0x19a0 kernel/locking/lockdep.c:4609
Code: 41 ba 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 c7 43 14 00 00 00 00 <48> 8b 84 24 30 01 00 00 65 48 2b 04 25 28 00 00 00 0f 85 54 13 00
RSP: 0018:ffffc9000380f848 EFLAGS: 00000082
RAX: dffffc0000000000 RBX: fffff52000701f10 RCX: 1ffffffff1f8b202
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffffff8fc59010
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff8fc03c07
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880199ec640
R13: 0000000000000002 R14: 0000000000000716 R15: ffff8880199ec660
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dd508f9030 CR3: 0000000067d87000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_lock kernel/locking/lockdep.c:4554 [inline]
mark_usage kernel/locking/lockdep.c:4499 [inline]
__lock_acquire+0x86e/0x55d0 kernel/locking/lockdep.c:4965
lock_acquire kernel/locking/lockdep.c:5622 [inline]
lock_acquire+0x1ab/0x4e0 kernel/locking/lockdep.c:5587
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:368 [inline]
batadv_nc_purge_paths+0xc0/0x2d0 net/batman-adv/network-coding.c:446
batadv_nc_worker+0x6e0/0xd90 net/batman-adv/network-coding.c:724
process_one_work+0x85b/0x1360 kernel/workqueue.c:2307
worker_thread+0x5a6/0xf90 kernel/workqueue.c:2454
kthread+0x38b/0x460 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298