ci starts bisection 2022-12-18 17:25:22.705301713 +0000 UTC m=+155822.109336151
bisecting cause commit starting from 4c86114194e644b6da9107d75910635c9e87179e
building syzkaller on 0de35f24a4d2da07a3436f9d227c30d15f508beb
ensuring issue is reproducible on original commit 4c86114194e644b6da9107d75910635c9e87179e

testing commit 4c86114194e644b6da9107d75910635c9e87179e gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: bbe7c4d98fc6ff3487c0087dcbf6c77f3b51efad7e83ff164b5122d95dcd5b82
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: INFO: rcu detected stall in corrupted
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing release v6.0
testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b97f6a544635597eb9ea17025eebfd564b3776c04dcc52220c3581b701b03dd5
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: BUG: unable to handle kernel paging request in inode_wait_for_writeback
run #6: OK
run #7: OK
run #8: OK
run #9: OK
testing release v5.19
testing commit 3d7cb6b04c3f3115719235cc6866b10326de34cd gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 49535b5cbb1d178c93d6045464313827b7fc1fc63e7c33bc178d3d6cbaa3765c
run #0: crashed: KASAN: stack-out-of-bounds Write in end_buffer_read_sync
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
reproducer seems to be flaky
testing release v5.18
testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7cafd6e09bdedb603131daefdff0c3053b6b4637094bbf3ab863b8b5b499f30f
all runs: OK
# git bisect start 3d7cb6b04c3f3115719235cc6866b10326de34cd 4b0986a3613c92f4ec1bdc7f60ec66fea135991f
Bisecting: 8493 revisions left to test after this (roughly 13 steps)
[c011dd537ffe47462051930413fed07dbdc80313] Merge tag 'arm-soc-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

testing commit c011dd537ffe47462051930413fed07dbdc80313 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: a74097fa7d52e4f35d589fd193c7d05357e35ea299f49aa3a6a7c9b02ef001e0
run #0: crashed: BUG: unable to handle kernel paging request in ni_clear
run #1: crashed: BUG: spinlock bad magic in writeback_single_inode
run #2: crashed: kernel panic: stack is corrupted in __lock_acquire
run #3: crashed: kernel panic: stack is corrupted in __lock_acquire
run #4: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync
run #5: crashed: kernel panic: stack is corrupted in __lock_acquire
run #6: crashed: kernel panic: stack is corrupted in __lock_acquire
run #7: crashed: BUG: spinlock bad magic in writeback_single_inode
run #8: crashed: BUG: spinlock bad magic in writeback_single_inode
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor841849367" "root@10.128.1.151:./syz-executor841849367"]: exit status 1
ssh: connect to host 10.128.1.151 port 22: Connection timed out
lost connection

run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad c011dd537ffe47462051930413fed07dbdc80313
Bisecting: 2961 revisions left to test after this (roughly 12 steps)
[7e062cda7d90543ac8c7700fc7c5527d0c0f22ad] Merge tag 'net-next-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

testing commit 7e062cda7d90543ac8c7700fc7c5527d0c0f22ad gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 81407f4e7ad29468f7e878eea2542016cbfd6d96acd87f26aab3a0085b390c64
run #0: crashed: BUG: spinlock bad magic in writeback_single_inode
run #1: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync
run #2: crashed: kernel panic: stack is corrupted in __lock_acquire
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 7e062cda7d90543ac8c7700fc7c5527d0c0f22ad
Bisecting: 2538 revisions left to test after this (roughly 11 steps)
[3842007b1a33589d57f67eac479b132b77767514] Merge tag 'zonefs-5.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs

testing commit 3842007b1a33589d57f67eac479b132b77767514 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 02bf5af3b1d071586aa6006a5378f9717ddb66a307bc950891db1151a5987ea2
run #0: crashed: BUG: sleeping function called from invalid context in write_inode_now
run #1: crashed: WARNING: bad unlock balance in corrupted
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 3842007b1a33589d57f67eac479b132b77767514
Bisecting: 1204 revisions left to test after this (roughly 10 steps)
[22922deae13fc8d3769790c2eb388e9afce9771d] Merge tag 'objtool-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

testing commit 22922deae13fc8d3769790c2eb388e9afce9771d gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 818e8cb54ef37cfa1bd8a569c496bcb940006ad8e244e27d2e213b2f7c3dbefc
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 22922deae13fc8d3769790c2eb388e9afce9771d
Bisecting: 605 revisions left to test after this (roughly 9 steps)
[03e1ccd45fa70904e43ddceda140854d22b7e871] Merge tag 'x86-irq-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

testing commit 03e1ccd45fa70904e43ddceda140854d22b7e871 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 9b6983d4ded210dbb48900e87203a7eb642fb6f926a0e22334d4f6c3a36b9394
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: crashed: WARNING: bad unlock balance in corrupted
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 03e1ccd45fa70904e43ddceda140854d22b7e871
Bisecting: 300 revisions left to test after this (roughly 8 steps)
[e1a8fde7203fa8a3e3f35d4f9df47477d23529c1] Merge tag 'for-5.19/io_uring-net-2022-05-22' of git://git.kernel.dk/linux-block

testing commit e1a8fde7203fa8a3e3f35d4f9df47477d23529c1 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8b857da6902c599ba6eb24b3c6650e321700457cf9fee42d06568bf9c1126063
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad e1a8fde7203fa8a3e3f35d4f9df47477d23529c1
Bisecting: 130 revisions left to test after this (roughly 7 steps)
[1e57930e9f4083ad5854ab6eadffe790a8167fb4] Merge tag 'rcu.2022.05.19a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

testing commit 1e57930e9f4083ad5854ab6eadffe790a8167fb4 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7e7cca310b3db8bc48bc28cc85c2cb571adebd1427ec66e04929a93f5780f70b
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: crashed: WARNING: bad unlock balance in corrupted
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 1e57930e9f4083ad5854ab6eadffe790a8167fb4
Bisecting: 81 revisions left to test after this (roughly 6 steps)
[be05ee54378d451e1d60196921566d6087f3079f] Merge branches 'docs.2022.04.20a', 'fixes.2022.04.20a', 'nocb.2022.04.11b', 'rcu-tasks.2022.04.11b', 'srcu.2022.05.03a', 'torture.2022.04.11b', 'torture-tasks.2022.04.20a' and 'torturescript.2022.04.20a' into HEAD

testing commit be05ee54378d451e1d60196921566d6087f3079f gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8228af083cb0c9d28f6cf339015fc35abeb1ca353185b2a823096b225884117f
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: crashed: WARNING: bad unlock balance in corrupted
run #2: crashed: WARNING: bad unlock balance in corrupted
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad be05ee54378d451e1d60196921566d6087f3079f
Bisecting: 57 revisions left to test after this (roughly 5 steps)
[586e31d59c436cda65a2e8ac04ff954bed247023] srcu: Drop needless initialization of sdp in srcu_gp_start()

testing commit 586e31d59c436cda65a2e8ac04ff954bed247023 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: da6fd645a1341f2b511a743cf246efd9c3147c0e055a506ef6cf88479c97aa6b
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: crashed: KASAN: stack-out-of-bounds Write in end_buffer_read_sync
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 586e31d59c436cda65a2e8ac04ff954bed247023
Bisecting: 10 revisions left to test after this (roughly 3 steps)
[0b56f953908a751716f2c8f907942674b60d8db5] srcu: Ensure snp nodes tree is fully initialized before traversal

testing commit 0b56f953908a751716f2c8f907942674b60d8db5 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b305c8f0db717a16b287360c952b75b708b66aba6519d25c7d97c9168bcc482f
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: crashed: WARNING: bad unlock balance in corrupted
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: crashed: WARNING: bad unlock balance in corrupted
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 0b56f953908a751716f2c8f907942674b60d8db5
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[2ec303113d978931ef368886c4c6bc854493e8bf] srcu: Dynamically allocate srcu_node array

testing commit 2ec303113d978931ef368886c4c6bc854493e8bf gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: bdf2db35b9c46c870bc28237476cbec990d41fff3b611ed5950a1d5fbab8eda8
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: OK
run #2: crashed: WARNING: bad unlock balance in corrupted
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 2ec303113d978931ef368886c4c6bc854493e8bf
Bisecting: 2 revisions left to test after this (roughly 1 step)
[95ebe80d99de3cb849c522a1f768e5e8befa0b7c] srcu: Fix s/is/if/ typo in srcu_node comment

testing commit 95ebe80d99de3cb849c522a1f768e5e8befa0b7c gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 3facd3073d5670f82483c13548fc276ff0bef3debb2b4a71a5ebf3cc6fcfb23c
run #0: OK
run #1: OK
run #2: OK
run #3: crashed: KASAN: stack-out-of-bounds Write in end_buffer_read_sync
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 95ebe80d99de3cb849c522a1f768e5e8befa0b7c
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[8ed00760203d8018bee042fbfe8e076579be2c2b] srcu: Tighten cleanup_srcu_struct() GP checks

testing commit 8ed00760203d8018bee042fbfe8e076579be2c2b gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8631766c4c38f0d70e2dfcb07987f50827f7ceac08a07860ec7ba8705eb98bb7
run #0: crashed: WARNING: bad unlock balance in corrupted
run #1: crashed: WARNING: bad unlock balance in corrupted
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
# git bisect bad 8ed00760203d8018bee042fbfe8e076579be2c2b
8ed00760203d8018bee042fbfe8e076579be2c2b is the first bad commit
commit 8ed00760203d8018bee042fbfe8e076579be2c2b
Author: Paul E. McKenney <paulmck@kernel.org>
Date:   Wed Jan 12 09:52:44 2022 -0800

    srcu: Tighten cleanup_srcu_struct() GP checks
    
    Currently, cleanup_srcu_struct() checks for a grace period in progress,
    but it does not check for a grace period that has not yet started but
    which might start at any time.  Such a situation could result in a
    use-after-free bug, so this commit adds a check for a grace period that
    is needed but not yet started to cleanup_srcu_struct().
    
    Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

 kernel/rcu/srcutree.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

parent commit 3123109284176b1532874591f7c81f3837bbdc17 wasn't tested
testing commit 3123109284176b1532874591f7c81f3837bbdc17 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4aaa6649c9df5cb4b745aad4fa35639a57c64379f920fce0b1803c2065462f42
culprit signature: 8631766c4c38f0d70e2dfcb07987f50827f7ceac08a07860ec7ba8705eb98bb7
parent  signature: 4aaa6649c9df5cb4b745aad4fa35639a57c64379f920fce0b1803c2065462f42
Reproducer flagged being flaky
revisions tested: 17, total time: 5h29m16.216841545s (build: 2h8m43.593498242s, test: 3h16m26.302065907s)
first bad commit: 8ed00760203d8018bee042fbfe8e076579be2c2b srcu: Tighten cleanup_srcu_struct() GP checks
recipients (to): ["linux-kernel@vger.kernel.org" "paulmck@kernel.org"]
recipients (cc): ["jiangshanlai@gmail.com" "josh@joshtriplett.org" "mathieu.desnoyers@efficios.com" "paulmck@kernel.org" "rcu@vger.kernel.org" "rostedt@goodmis.org"]
crash: WARNING: bad unlock balance in corrupted
=====================================
WARNING: bad unlock balance detected!
5.18.0-rc1-syzkaller #0 Not tainted
-------------------------------------
syz-executor329/19136 is trying to release lock (
BUG: unable to handle page fault for address: ffffff88f98e8000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD ac8f067 P4D ac8f067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 19136 Comm: syz-executor329 Not tainted 5.18.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:string_nocheck lib/vsprintf.c:643 [inline]
RIP: 0010:string+0x154/0x330 lib/vsprintf.c:725
Code: 48 39 dd 74 2f 48 89 d7 48 83 c2 01 48 89 f8 48 89 f9 48 c1 e8 03 83 e1 07 42 0f b6 04 00 38 c8 7f 08 84 c0 0f 85 34 01 00 00 <44> 0f b6 72 ff 45 84 f6 75 9e 4c 89 f9 4c 89 ea 48 89 ef e8 64 9b
RSP: 0018:ffffc9000baf7410 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc9010baf76c1 RCX: 0000000000000000
RDX: ffffff88f98e8001 RSI: 0000000000000000 RDI: ffffff88f98e8000
RBP: ffffc9000baf76c2 R08: dffffc0000000000 R09: 1ffff9200175ee01
R10: fffff5200175eed8 R11: 0000000000000001 R12: 1ffff9200175ee85
R13: ffffc9000baf76c8 R14: ffffc9000baf7518 R15: ffff0a00ffffff04
FS:  00007f7524e23700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffff88f98e8000 CR3: 0000000022eac000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 vsnprintf+0x198/0x1630 lib/vsprintf.c:2806
 vprintk_store+0x28b/0x8f0 kernel/printk/printk.c:2158
 vprintk_emit+0x63/0x3c0 kernel/printk/printk.c:2256
 _printk+0xad/0xde kernel/printk/printk.c:2293
 print_lockdep_cache+0xba/0xf5 kernel/locking/lockdep.c:721
 print_unlock_imbalance_bug.part.0+0x8b/0xe6 kernel/locking/lockdep.c:5074
 print_unlock_imbalance_bug include/trace/events/lock.h:58 [inline]
 __lock_release kernel/locking/lockdep.c:5318 [inline]
 lock_release.cold+0x34/0x4e kernel/locking/lockdep.c:5661
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:389 [inline]
 writeback_single_inode+0xdb/0x340 fs/fs-writeback.c:1718
 write_inode_now+0x125/0x190 fs/fs-writeback.c:2697
 iput_final fs/inode.c:1731 [inline]
 iput.part.0+0x363/0x6a0 fs/inode.c:1770
 ntfs_fill_super+0x2414/0x3120 fs/ntfs3/super.c:1178
 get_tree_bdev+0x398/0x680 fs/super.c:1292
 vfs_get_tree+0x7f/0x2c0 fs/super.c:1497
 do_new_mount fs/namespace.c:3040 [inline]
 path_mount+0x7e8/0x1a40 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3568
 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+0x44/0xae
RIP: 0033:0x7f7524e7d27a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f7524e23168 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7524e7d27a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7524e23180
RBP: 0000000000000004 R08: 00007f7524e231c0 R09: 00007f7524e236b8
R10: 0000000000000000 R11: 0000000000000286 R12: 00007f7524e231c0
R13: 000000000000010c R14: 00007f7524e23180 R15: 0000000020001b20
 </TASK>
Modules linked in:
CR2: ffffff88f98e8000
---[ end trace 0000000000000000 ]---
RIP: 0010:string_nocheck lib/vsprintf.c:643 [inline]
RIP: 0010:string+0x154/0x330 lib/vsprintf.c:725
Code: 48 39 dd 74 2f 48 89 d7 48 83 c2 01 48 89 f8 48 89 f9 48 c1 e8 03 83 e1 07 42 0f b6 04 00 38 c8 7f 08 84 c0 0f 85 34 01 00 00 <44> 0f b6 72 ff 45 84 f6 75 9e 4c 89 f9 4c 89 ea 48 89 ef e8 64 9b
RSP: 0018:ffffc9000baf7410 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc9010baf76c1 RCX: 0000000000000000
RDX: ffffff88f98e8001 RSI: 0000000000000000 RDI: ffffff88f98e8000
RBP: ffffc9000baf76c2 R08: dffffc0000000000 R09: 1ffff9200175ee01
R10: fffff5200175eed8 R11: 0000000000000001 R12: 1ffff9200175ee85
R13: ffffc9000baf76c8 R14: ffffc9000baf7518 R15: ffff0a00ffffff04
FS:  00007f7524e23700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffff88f98e8000 CR3: 0000000022eac000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	48 39 dd             	cmp    %rbx,%rbp
   3:	74 2f                	je     0x34
   5:	48 89 d7             	mov    %rdx,%rdi
   8:	48 83 c2 01          	add    $0x1,%rdx
   c:	48 89 f8             	mov    %rdi,%rax
   f:	48 89 f9             	mov    %rdi,%rcx
  12:	48 c1 e8 03          	shr    $0x3,%rax
  16:	83 e1 07             	and    $0x7,%ecx
  19:	42 0f b6 04 00       	movzbl (%rax,%r8,1),%eax
  1e:	38 c8                	cmp    %cl,%al
  20:	7f 08                	jg     0x2a
  22:	84 c0                	test   %al,%al
  24:	0f 85 34 01 00 00    	jne    0x15e
* 2a:	44 0f b6 72 ff       	movzbl -0x1(%rdx),%r14d <-- trapping instruction
  2f:	45 84 f6             	test   %r14b,%r14b
  32:	75 9e                	jne    0xffffffd2
  34:	4c 89 f9             	mov    %r15,%rcx
  37:	4c 89 ea             	mov    %r13,%rdx
  3a:	48 89 ef             	mov    %rbp,%rdi
  3d:	e8                   	.byte 0xe8
  3e:	64                   	fs
  3f:	9b                   	fwait