syzbot


possible deadlock in hfsplus_get_block

Status: upstream: reported C repro on 2023/03/14 12:03
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+b46585854af80cb191c5@syzkaller.appspotmail.com
First crash: 192d, last: 6d15h
Bug presence (1)
Date Name Commit Repro Result
2023/05/17 upstream (ToT) f1fcbaa18b28 C [report] possible deadlock in hfsplus_get_block
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 possible deadlock in hfsplus_get_block hfsplus C 248 199d 300d 0/1 upstream: reported C repro on 2022/11/26 01:19
linux-4.14 possible deadlock in hfsplus_get_block hfsplus C 131 204d 296d 0/1 upstream: reported C repro on 2022/11/30 01:33
linux-6.1 possible deadlock in hfsplus_get_block origin:lts-only C 244 2d14h 192d 0/3 upstream: reported C repro on 2023/03/13 14:59
upstream possible deadlock in hfsplus_get_block hfs C error 4073 4h06m 301d 0/25 upstream: reported C repro on 2022/11/25 09:45

Sample crash report:
loop0: detected capacity change from 0 to 1024
============================================
WARNING: possible recursive locking detected
5.15.111-syzkaller #0 Not tainted
--------------------------------------------
syz-executor359/3961 is trying to acquire lock:
ffff0000c89a1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260

but task is already holding lock:
ffff0000c89a2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x198/0x14e0 fs/hfsplus/extents.c:457

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&HFSPLUS_I(inode)->extents_lock);
  lock(&HFSPLUS_I(inode)->extents_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by syz-executor359/3961:
 #0: ffff0000c8d94460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x228/0xb3c fs/read_write.c:590
 #1: ffff0000c89a2b80 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
 #1: ffff0000c89a2b80 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: generic_file_write_iter+0x84/0x1b8 mm/filemap.c:3932
 #2: ffff0000c89a2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x198/0x14e0 fs/hfsplus/extents.c:457
 #3: ffff0000c89c38f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x8c/0x800 fs/hfsplus/bitmap.c:35

stack backtrace:
CPU: 1 PID: 3961 Comm: syz-executor359 Not tainted 5.15.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 __lock_acquire+0x62b4/0x7620 kernel/locking/lockdep.c:5011
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
 hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260
 block_read_full_page+0x2a0/0xc4c fs/buffer.c:2290
 hfsplus_readpage+0x28/0x38 fs/hfsplus/inode.c:28
 do_read_cache_page+0x60c/0x950
 read_cache_page+0x68/0x84 mm/filemap.c:3565
 read_mapping_page include/linux/pagemap.h:515 [inline]
 hfsplus_block_allocate+0xe0/0x800 fs/hfsplus/bitmap.c:37
 hfsplus_file_extend+0x770/0x14e0 fs/hfsplus/extents.c:468
 hfsplus_get_block+0x398/0x1194 fs/hfsplus/extents.c:245
 __block_write_begin_int+0x3ec/0x1608 fs/buffer.c:2012
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin fs/buffer.c:2122 [inline]
 cont_write_begin+0x538/0x710 fs/buffer.c:2471
 hfsplus_write_begin+0xa8/0xf8 fs/hfsplus/inode.c:53
 generic_perform_write+0x24c/0x520 mm/filemap.c:3776
 __generic_file_write_iter+0x230/0x454 mm/filemap.c:3903
 generic_file_write_iter+0xb4/0x1b8 mm/filemap.c:3935
 call_write_iter include/linux/fs.h:2103 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x87c/0xb3c fs/read_write.c:594
 ksys_write+0x15c/0x26c fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Crashes (270):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/15 00:47 linux-5.15.y b0ece631f84a 2b9ba477 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/07/28 21:20 linux-5.15.y 09996673e313 92476829 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/06/23 01:14 linux-5.15.y f67653019430 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/06/04 15:07 linux-5.15.y 0ab06468cbd1 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/05/29 13:59 linux-5.15.y 1fe619a7d252 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/06/17 18:04 linux-5.15.y 471e639e59d1 f3921d4d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/05/05 13:59 linux-5.15.y 8a7f2a5c5aa1 518a39a6 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/09/15 23:21 linux-5.15.y aff03380bda4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/13 15:41 linux-5.15.y aff03380bda4 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/12 17:15 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/12 14:14 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/11 18:39 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/11 15:24 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/11 05:05 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/11 03:29 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/10 05:50 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/08 22:21 linux-5.15.y aff03380bda4 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/08 04:55 linux-5.15.y aff03380bda4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/04 21:42 linux-5.15.y 8f790700c974 db3306a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/09/02 12:03 linux-5.15.y 8f790700c974 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/31 21:24 linux-5.15.y 9e43368a3393 696ea0d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/31 02:54 linux-5.15.y 9e43368a3393 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/30 19:14 linux-5.15.y 9e43368a3393 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/28 16:27 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/23 02:34 linux-5.15.y f6f7927ac664 b81ca3f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/22 20:45 linux-5.15.y f6f7927ac664 b81ca3f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/20 23:00 linux-5.15.y f6f7927ac664 d216d8a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/18 16:46 linux-5.15.y f6f7927ac664 acb1ba71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/15 03:54 linux-5.15.y 24c4de4069cb 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/08 06:22 linux-5.15.y 38d4ca22a528 b1b6ae3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/03 16:00 linux-5.15.y 38d4ca22a528 39a91c18 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan possible deadlock in hfsplus_get_block
2023/08/28 10:33 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/26 09:33 linux-5.15.y f6f7927ac664 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/24 19:00 linux-5.15.y f6f7927ac664 49be837e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/15 17:45 linux-5.15.y 24c4de4069cb 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/10 04:57 linux-5.15.y c275eaaaa342 13ca4cd6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/07 16:42 linux-5.15.y 38d4ca22a528 b1b6ae3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/07 14:15 linux-5.15.y 38d4ca22a528 dda824c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/06 15:16 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/06 06:13 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/06 04:49 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/05 17:40 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/05 13:27 linux-5.15.y 38d4ca22a528 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/04 23:13 linux-5.15.y 38d4ca22a528 cdae481e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/04 19:02 linux-5.15.y 38d4ca22a528 cdae481e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/04 13:43 linux-5.15.y 38d4ca22a528 74621247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/04 00:21 linux-5.15.y 38d4ca22a528 74621247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/03 18:30 linux-5.15.y 38d4ca22a528 74621247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/03 13:30 linux-5.15.y 38d4ca22a528 39a91c18 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/03 10:12 linux-5.15.y 09996673e313 39a91c18 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/02 22:53 linux-5.15.y 09996673e313 b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/02 21:00 linux-5.15.y 09996673e313 b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/02 19:23 linux-5.15.y 09996673e313 b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/02 17:26 linux-5.15.y 09996673e313 b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/02 11:54 linux-5.15.y 09996673e313 df07ffe8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/01 21:17 linux-5.15.y 09996673e313 df07ffe8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/01 19:26 linux-5.15.y 09996673e313 df07ffe8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/08/01 10:52 linux-5.15.y 09996673e313 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/07/31 22:45 linux-5.15.y 09996673e313 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
2023/03/14 12:01 linux-5.15.y 2ddbd0f967b3 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 possible deadlock in hfsplus_get_block
* Struck through repros no longer work on HEAD.