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KASAN: null-ptr-deref Write in xlog_cil_commit

Status: upstream: reported C repro on 2023/03/10 01:55
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+798d81a034a88c5e8aad@syzkaller.appspotmail.com
First crash: 806d, last: 5h07m
Fix commit to backport (bisect log) :
tree: upstream
commit 8dc9384b7d75012856b02ff44c37566a55fc2abf
Author: Dave Chinner <dchinner@redhat.com>
Date: Wed Jan 5 01:22:18 2022 +0000

  xfs: reduce kvmalloc overhead for CIL shadow buffers

  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/05/07 linux-5.15.y (ToT) 8a7f2a5c5aa1 C [report] KASAN: null-ptr-deref Write in xlog_cil_commit
2023/05/07 upstream (ToT) fc4354c6e5c2 C Didn't crash
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: corrupted list in xlog_cil_commit xfs 6 346d 357d 0/28 auto-obsoleted due to no activity on 2024/09/20 09:02
upstream BUG: corrupted list in xlog_cil_commit (2) xfs 3 153d 188d 0/28 auto-obsoleted due to no activity on 2025/03/22 12:28
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/10/24 00:21 4h55m fix candidate upstream OK (1) job log

Sample crash report:
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007ffeca45da5a R14: 0000000000000003 R15: 00007fc8a4e7f790
 </TASK>
==================================================================
BUG: KASAN: null-ptr-deref in xlog_cil_alloc_shadow_bufs fs/xfs/xfs_log_cil.c:225 [inline]
BUG: KASAN: null-ptr-deref in xlog_cil_commit+0x383/0x2670 fs/xfs/xfs_log_cil.c:1264
Write of size 88 at addr 0000000000000000 by task syz-executor851/3584

CPU: 1 PID: 3584 Comm: syz-executor851 Not tainted 5.15.103-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 __kasan_report mm/kasan/report.c:438 [inline]
 kasan_report+0x161/0x1c0 mm/kasan/report.c:451
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
 memset+0x1f/0x40 mm/kasan/shadow.c:44
 xlog_cil_alloc_shadow_bufs fs/xfs/xfs_log_cil.c:225 [inline]
 xlog_cil_commit+0x383/0x2670 fs/xfs/xfs_log_cil.c:1264
 __xfs_trans_commit+0x875/0xe80 fs/xfs/xfs_trans.c:881
 xfs_fileattr_set+0x1184/0x18c0 fs/xfs/xfs_ioctl.c:1478
 vfs_fileattr_set+0x8f3/0xd30 fs/ioctl.c:700
 ioctl_fssetxattr fs/ioctl.c:762 [inline]
 do_vfs_ioctl+0x1736/0x2b70 fs/ioctl.c:849
 __do_sys_ioctl fs/ioctl.c:872 [inline]
 __se_sys_ioctl+0x81/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fc8a4e06879
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 18 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeca45da28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fc8a4e06879
RDX: 0000000020000000 RSI: 00000000401c5820 RDI: 0000000000000004
RBP: 00007ffeca45da70 R08: 0000000000000001 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007ffeca45da5a R14: 0000000000000003 R15: 00007fc8a4e7f790
 </TASK>
==================================================================

Crashes (1371):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/20 02:48 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/14 22:43 linux-5.15.y 3b8db0e4f263 a4fa04ef .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/02/03 01:20 linux-5.15.y c16c81c81336 568559e4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/02/03 00:59 linux-5.15.y c16c81c81336 568559e4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2024/11/30 10:23 linux-5.15.y 0a51d2d4527b 68914665 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2024/08/21 21:47 linux-5.15.y fa93fa65db6e db5852f9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2024/05/13 13:06 linux-5.15.y 284087d4f7d5 9026e142 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2024/01/28 12:33 linux-5.15.y 6139f2a02fe0 cc4a4020 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2023/10/19 19:21 linux-5.15.y 02e21884dcf2 42e1d524 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2023/07/08 14:37 linux-5.15.y d54cfc420586 668cb1fa .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2023/03/30 06:00 linux-5.15.y 115472395b0a f325deb0 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2023/03/10 02:13 linux-5.15.y d9b4a0c83a2d f08b59ac .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/18 12:35 linux-5.15.y a68c15152131 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/17 20:18 linux-5.15.y 3b8db0e4f263 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/12 04:14 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/05 05:44 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/04 16:58 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/28 13:02 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/24 15:58 linux-5.15.y 98f47d0e9b8c ed351ea7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/21 11:35 linux-5.15.y a68c15152131 b47f9e02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/21 08:30 linux-5.15.y a68c15152131 b47f9e02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/21 06:19 linux-5.15.y a68c15152131 b47f9e02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/20 23:23 linux-5.15.y a68c15152131 b47f9e02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/18 19:06 linux-5.15.y a68c15152131 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/17 21:41 linux-5.15.y 3b8db0e4f263 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/16 08:32 linux-5.15.y 3b8db0e4f263 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/16 05:06 linux-5.15.y 3b8db0e4f263 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/14 22:18 linux-5.15.y 3b8db0e4f263 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/13 08:17 linux-5.15.y 3b8db0e4f263 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/11 19:12 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/10 18:45 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/10 16:49 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/10 15:24 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/10 14:07 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/10 07:28 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/09 13:54 linux-5.15.y 3b8db0e4f263 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/08 22:48 linux-5.15.y 16fdf2c7111b dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/08 15:48 linux-5.15.y 16fdf2c7111b dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/08 13:36 linux-5.15.y 16fdf2c7111b dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/08 07:58 linux-5.15.y 16fdf2c7111b dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/04 22:09 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/04 18:31 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/03 19:21 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/02 04:44 linux-5.15.y f7347f400572 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/05/02 02:58 linux-5.15.y f7347f400572 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/29 16:13 linux-5.15.y f7347f400572 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/29 15:11 linux-5.15.y f7347f400572 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/29 04:46 linux-5.15.y f7347f400572 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/28 14:15 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/28 10:13 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/28 07:23 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/28 06:00 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/27 13:54 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/27 10:27 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2025/04/27 06:39 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
2023/03/10 01:55 linux-5.15.y d9b4a0c83a2d f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: null-ptr-deref Write in xlog_cil_commit
* Struck through repros no longer work on HEAD.