ci starts bisection 2023-05-04 01:26:37.725922598 +0000 UTC m=+46733.130436778
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: bca353751ab97412e0ece1f22701421c0add293ce4eadac3b9594fc6869a808b
all runs: crashed: INFO: task hung in blkdev_fallocate
testing current HEAD fa31fc82fb775445c176e576304c4098222f47f2
testing commit fa31fc82fb775445c176e576304c4098222f47f2 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8aadf6b7e5777fc458d6eb041d80e88fb603a207a2f078b67106bd64bf3079a5
all runs: crashed: INFO: task hung in blkdev_fallocate
revisions tested: 2, total time: 30m22.761711517s (build: 17m49.327411307s, test: 11m55.163779169s)
the crash still happens on HEAD
commit msg: Merge tag 'pm-6.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
crash: INFO: task hung in blkdev_fallocate
INFO: task syz-executor.0:5428 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27832 pid:5428 ppid:5325 flags:0x00004004
Call Trace:
__schedule+0x1859/0x48c0
schedule+0xc3/0x180
schedule_preempt_disabled+0x13/0x20
rwsem_down_write_slowpath+0xedd/0x13a0
__down_write_common+0x1aa/0x200
blkdev_fallocate+0x1a5/0x2e0
vfs_fallocate+0x3ae/0x530
do_madvise+0x1428/0x35d0
__x64_sys_madvise+0xa0/0xb0
do_syscall_64+0x41/0xc0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd9f8c8c0a9
RSP: 002b:00007fd9f9ab5168 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007fd9f8dac050 RCX: 00007fd9f8c8c0a9
RDX: 0000000000000009 RSI: 0000000000600003 RDI: 0000000020000000
RBP: 00007fd9f8ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffea104def R14: 00007fd9f9ab5300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8bf18cd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8bf19090 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20
1 lock held by khungtaskd/28:
#0: ffffffff8bf18b00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4726:
#0: ffff88814abfa098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x60
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ed/0x1880
1 lock held by syz-executor.0/5424:
1 lock held by syz-executor.0/5428:
#0: ffff8880154af6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1a5/0x2e0
1 lock held by syz-executor.0/5716:
#0: ffff8880154af6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x10f/0x650
1 lock held by syz-executor.0/5717:
#0: ffff8880154af6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1a5/0x2e0
1 lock held by syz-executor.0/5734:
#0: ffff8880154af6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x10f/0x650
1 lock held by syz-executor.0/5735:
#0: ffff8880154af6b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1a5/0x2e0
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
dump_stack_lvl+0x167/0x220
nmi_cpu_backtrace+0x34f/0x380
nmi_trigger_cpumask_backtrace+0x103/0x1f0
watchdog+0xa7c/0xac0
kthread+0x276/0x2f0
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5424 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:__count_memcg_events+0x1e4/0x380
Code: df 89 c6 e8 4e e9 ab ff 48 c7 c7 20 fc f5 89 e8 62 b4 d9 07 48 8b 4c 24 18 89 c8 f7 d8 0f 48 c1 89 c3 65 0f c1 1d 54 a5 38 7e <01> c3 83 fb 41 48 ba 00 00 00 00 00 fc ff df 72 7e 48 c7 c7 00 e3
RSP: 0018:ffffc9000404f040 EFLAGS: 00000006
RAX: 0000000000000001 RBX: 000000000000001a RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff89f5fc20 RDI: ffffffff8a382a00
RBP: ffffc9000404f0f0 R08: dffffc0000000000 R09: fffffbfff1a7d2d6
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 1ffff92000809e0c R14: 0000607f46035f80 R15: ffff888023a4e000
FS: 00007fd9f9ad6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556c05a69600 CR3: 000000001f44d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
charge_memcg+0x21d/0x3f0
__mem_cgroup_charge+0x27/0x80
__filemap_add_folio+0xb5a/0x12f0
filemap_add_folio+0xfa/0x3d0
page_cache_ra_unbounded+0x1f5/0x650
do_sync_mmap_readahead+0x6d8/0x900
filemap_fault+0x6ed/0x12f0
__do_fault+0x10f/0x380
handle_mm_fault+0x1480/0x41f0
__get_user_pages+0x44b/0xda0
populate_vma_page_range+0x216/0x2e0
__mm_populate+0x21b/0x380
vm_mmap_pgoff+0x292/0x380
ksys_mmap_pgoff+0x42c/0x5d0
do_syscall_64+0x41/0xc0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd9f8c8c0a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9f9ad6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fd9f8dabf80 RCX: 00007fd9f8c8c0a9
RDX: 000000000000000a RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007fd9f8ce7ae9 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffea104def R14: 00007fd9f9ad6300 R15: 0000000000022000