ci starts bisection 2023-04-02 16:08:41.660297553 +0000 UTC m=+359062.106645520
bisecting fixing commit since 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c
building syzkaller on 9da18ae8fa827d046ef8da48cc23c97418553c23
ensuring issue is reproducible on original commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c
testing commit 72a85e2b0a1e1e6fb4ee51ae902730212b2de25c gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 2e397b439a04e33cc4a8d9b5092da9e9751d2f45cffecf2196960e57a8365e5c
all runs: crashed: INFO: task hung in blkdev_fallocate
testing current HEAD 00c7b5f4ddc5b346df62b757ec73f9357bb452af
testing commit 00c7b5f4ddc5b346df62b757ec73f9357bb452af gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4cc6f5eb81a9e65fa2df624a871847af371b9f20355b4bfb4f3fc6aa244d688a
all runs: crashed: INFO: task hung in blkdev_fallocate
revisions tested: 2, total time: 31m32.378669111s (build: 18m53.563724119s, test: 11m42.983612692s)
the crash still happens on HEAD
commit msg: Merge tag 'input-for-v6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
crash: INFO: task hung in blkdev_fallocate
INFO: task syz-executor.0:5619 blocked for more than 143 seconds.
Not tainted 6.3.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27552 pid:5619 ppid:5516 flags:0x00004004
Call Trace:
__schedule+0x1717/0x45f0
schedule+0xc3/0x180
schedule_preempt_disabled+0x13/0x20
rwsem_down_write_slowpath+0xedd/0x13a0
__down_write_common+0x1aa/0x200
blkdev_fallocate+0x1a8/0x2e0
vfs_fallocate+0x3ae/0x530
do_madvise+0x12ad/0x3440
__x64_sys_madvise+0xa0/0xb0
do_syscall_64+0x41/0xc0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdc1c48c0a9
RSP: 002b:00007fdc1b7fe168 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007fdc1c5ac050 RCX: 00007fdc1c48c0a9
RDX: 0000000000000009 RSI: 0000000000600003 RDI: 0000000020000000
RBP: 00007fdc1c4e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeb8d8231f R14: 00007fdc1b7fe300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8bf16f10 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8bf17710 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20
1 lock held by khungtaskd/28:
#0: ffffffff8bf16d40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4741:
#0: ffff88814a183098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x60
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ed/0x1880
2 locks held by syz-executor.0/5617:
1 lock held by syz-executor.0/5619:
#0: ffff88814482e0c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1a8/0x2e0
1 lock held by syz-executor.0/6218:
#0: ffff88814482e0c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x10f/0x650
1 lock held by syz-executor.0/6219:
#0: ffff88814482e0c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1a8/0x2e0
1 lock held by syz-executor.0/6236:
#0: ffff88814482e0c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x10f/0x650
1 lock held by syz-executor.0/6237:
#0: ffff88814482e0c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1a8/0x2e0
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
dump_stack_lvl+0x167/0x220
nmi_cpu_backtrace+0x34f/0x380
nmi_trigger_cpumask_backtrace+0x103/0x1f0
watchdog+0xa7c/0xac0
kthread+0x232/0x2b0
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11 Comm: kworker/u4:1 Not tainted 6.3.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_acquire+0x142/0x520
Code: c0 0f 85 88 01 00 00 65 48 8b 1d f9 ca a3 7e 48 81 c3 34 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 c4 02 00 00 <83> 3b 00 0f 85 5c 01 00 00 4c 8d bc 24 80 00 00 00 4c 89 fb 48 c1
RSP: 0018:ffffc90000107a80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880153ec434 RCX: ffffffff815fe8b4
RDX: 0000000000000000 RSI: ffffffff8a37e9a0 RDI: ffffffff8a37e960
RBP: ffffc90000107be0 R08: dffffc0000000000 R09: fffffbfff1a7a0be
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000020f58
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801f3a6180
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ae54b4e600 CR3: 000000000bd26000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire+0x24/0x30
batadv_nc_worker+0xb4/0x4b0
process_one_work+0x797/0xe20
worker_thread+0x8c9/0xfd0
kthread+0x232/0x2b0
ret_from_fork+0x1f/0x30