From: syzbot <syzbot+51c61e2b1259fcd64071@syzkaller.appspotmail.com>
To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: [syzbot] [fs?] BUG: sleeping function called from invalid context in bdev_getblk
Date: Thu, 21 Sep 2023 16:10:40 -0700 [thread overview]
Message-ID: <000000000000c456810605e6997c@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: dfa449a58323 Add linux-next specific files for 20230915
git tree: linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=14c33a54680000
kernel config: https://syzkaller.appspot.com/x/.config?x=e204dda2e58397ec
dashboard link: https://syzkaller.appspot.com/bug?extid=51c61e2b1259fcd64071
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=117f463c680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12406dac680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/34f9995871ed/disk-dfa449a5.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/95e2e1c3ab9e/vmlinux-dfa449a5.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cfc6db9684d4/bzImage-dfa449a5.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/7542796b830f/mount_0.gz
Bisection is inconclusive: the issue happens on the oldest tested release.
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12847a3c680000
final oops: https://syzkaller.appspot.com/x/report.txt?x=11847a3c680000
console output: https://syzkaller.appspot.com/x/log.txt?x=16847a3c680000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+51c61e2b1259fcd64071@syzkaller.appspotmail.com
loop0: rw=0, sector=17668342, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 8834171, async page read
syz-executor392: attempt to access beyond end of device
loop0: rw=0, sector=26932834, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 13466417, async page read
syz-executor392: attempt to access beyond end of device
loop0: rw=0, sector=16147212, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 8073606, async page read
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 5047 Comm: syz-executor392 Not tainted 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
syz-executor392: attempt to access beyond end of device
loop0: rw=0, sector=6491548, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 3245774, async page read
syz-executor392: attempt to access beyond end of device
loop0: rw=0, sector=17669878, nr_sectors = 2 limit=128
Buffer I/O error on dev loop0, logical block 8834939, async page read
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/pagemap.h:1012
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
folio_lock include/linux/pagemap.h:1012 [inline]
__filemap_get_folio+0x5e0/0xa90 mm/filemap.c:1880
grow_dev_page fs/buffer.c:1047 [inline]
grow_buffers fs/buffer.c:1111 [inline]
__getblk_slow+0x1be/0x720 fs/buffer.c:1138
bdev_getblk+0xad/0xc0 fs/buffer.c:1434
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/pagemap.h:1012
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
folio_lock include/linux/pagemap.h:1012 [inline]
__filemap_get_folio+0x5e0/0xa90 mm/filemap.c:1880
grow_dev_page fs/buffer.c:1047 [inline]
grow_buffers fs/buffer.c:1111 [inline]
__getblk_slow+0x1be/0x720 fs/buffer.c:1138
bdev_getblk+0xad/0xc0 fs/buffer.c:1434
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5047, name: syz-executor392
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor392/5047:
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: open_last_lookups fs/namei.c:3543 [inline]
#0: ffff888076ce8188 (&type->i_mutex_dir_key#6){.+.+}-{3:3}, at: path_openat+0x18a5/0x29c0 fs/namei.c:3774
#1: ffffffff8cfc8b98 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x15c0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 5047 Comm: syz-executor392 Tainted: G W 6.6.0-rc1-next-20230915-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c3/0x5e0 kernel/sched/core.c:10106
might_alloc include/linux/sched/mm.h:306 [inline]
bdev_getblk+0x89/0xc0 fs/buffer.c:1430
__bread_gfp+0xaf/0x370 fs/buffer.c:1479
sb_bread include/linux/buffer_head.h:326 [inline]
get_branch+0x2cb/0x660 fs/sysv/itree.c:104
get_block+0x1ad/0x15c0 fs/sysv/itree.c:222
block_read_full_folio+0x3df/0xae0 fs/buffer.c:2398
filemap_read_folio+0xe9/0x2c0 mm/filemap.c:2368
do_read_cache_folio+0x205/0x540 mm/filemap.c:3728
do_read_cache_page mm/filemap.c:3794 [inline]
read_cache_page+0x5b/0x160 mm/filemap.c:3803
read_mapping_page include/linux/pagemap.h:854 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1db/0x480 fs/sysv/dir.c:157
sysv_inode_by_name+0x74/0x1c0 fs/sysv/dir.c:374
sysv_lookup fs/sysv/namei.c:38 [inline]
sysv_lookup+0x88/0x100 fs/sysv/namei.c:31
lookup_open.isra.0+0x926/0x13b0 fs/namei.c:3454
open_last_lookups fs/namei.c:3544 [inline]
path_openat+0x931/0x29c0 fs/namei.c:3774
do_filp_open+0x1de/0x430 fs/namei.c:3804
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_open fs/open.c:1445 [inline]
__se_sys_open fs/open.c:1441 [inline]
__x64_sys_open+0x154/0x1e0 fs/open.c:1441
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f628dda19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fffe787af38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5f628dda19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5f6295a5f0 R08: 0000000000009e13 R09: 00005555563914c0
R10: 00007fffe787ae00 R11: 0000000000000246 R12: 00007fffe787af60
R13: 00007fffe787b188 R14: 431bde82d7b634db R15: 00007f5f6292603b
</TASK>
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
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https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
next reply other threads:[~2023-09-21 23:10 UTC|newest]
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2023-09-21 23:10 syzbot [this message]
2024-03-04 13:32 ` [syzbot] Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in bdev_getblk syzbot
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