divide error in flush_commit

Kernel	Title	Count	Last	Reported	Patched	Status
linux-5.15	divide error in flush_commit_list (2)	5	38d	210d	0/3	upstream: reported on 2024/04/25 09:33
upstream	divide error in flush_commit_list reiserfs	24	329d	704d	0/28	auto-obsoleted due to no activity on 2024/04/06 13:39
linux-5.15	divide error in flush_commit_list	1	568d	568d	0/3	auto-obsoleted due to no activity on 2023/08/23 09:10

audit: type=1800 audit(1676754162.751:2825): pid=31782 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=14335 res=0 divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 28991 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:flush_commit_list.isra.0+0xac1/0x1e20 fs/reiserfs/journal.c:1056 Code: c1 45 84 ca 0f 85 c2 0f 00 00 83 e2 07 40 38 d6 41 0f 9e c1 40 84 f6 0f 95 c2 41 84 d1 0f 85 a9 0f 00 00 41 8b 7c 24 14 31 d2 <48> f7 f7 48 8b 44 24 40 8d 34 11 48 c1 e8 03 80 3c 18 00 0f 85 6c RSP: 0018:ffff88803bb9f610 EFLAGS: 00010246 RAX: 00000000000002b0 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88809f120200 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888014aff000 R13: 00000000000000c7 R14: 0000000000000100 R15: ffff888035ed43c0 FS: 00007fe270c9b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004783b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: flush_journal_list.isra.0+0x24e/0x1e60 fs/reiserfs/journal.c:1395 flush_used_journal_lists.isra.0+0x330/0x580 fs/reiserfs/journal.c:1837 do_journal_end+0x325a/0x4840 fs/reiserfs/journal.c:4357 do_journal_begin_r+0x9f8/0x10b0 fs/reiserfs/journal.c:3125 journal_begin+0x162/0x400 fs/reiserfs/journal.c:3265 reiserfs_fill_super+0x1a81/0x2d80 fs/reiserfs/super.c:2117 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop5): using ordered data mode mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 reiserfs: using flush barriers vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): checking transaction log (loop5) ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 REISERFS (device loop5): Using r5 hash to sort names entry_SYSCALL_64_after_hwframe+0x49/0xbe REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. RIP: 0033:0x7fe27272a62a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 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:00007fe270c9af88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000001108 RCX: 00007fe27272a62a RDX: 0000000020001100 RSI: 00000000200001c0 RDI: 00007fe270c9afe0 RBP: 00007fe270c9b020 R08: 00007fe270c9b020 R09: 0000000000208088 R10: 0000000000208088 R11: 0000000000000202 R12: 0000000020001100 R13: 00000000200001c0 R14: 00007fe270c9afe0 R15: 0000000020000240 Modules linked in: REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal audit: type=1800 audit(1676754163.171:2826): pid=31797 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="file0" dev="sda1" ino=14422 res=0 REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers ---[ end trace c34e0451bfa86c10 ]--- RIP: 0010:flush_commit_list.isra.0+0xac1/0x1e20 fs/reiserfs/journal.c:1056 Code: c1 45 84 ca 0f 85 c2 0f 00 00 83 e2 07 40 38 d6 41 0f 9e c1 40 84 f6 0f 95 c2 41 84 d1 0f 85 a9 0f 00 00 41 8b 7c 24 14 31 d2 <48> f7 f7 48 8b 44 24 40 8d 34 11 48 c1 e8 03 80 3c 18 00 0f 85 6c REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 RSP: 0018:ffff88803bb9f610 EFLAGS: 00010246 RAX: 00000000000002b0 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 REISERFS (device loop3): checking transaction log (loop3) IPVS: ftp: loaded support on port[0] = 21 RBP: ffff88809f120200 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888014aff000 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal R13: 00000000000000c7 R14: 0000000000000100 R15: ffff888035ed43c0 FS: 00007fe270c9b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a0e41b4170 CR3: 000000004783b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 45 84 ca roll $0xca,-0x7c(%rbp) 4: 0f 85 c2 0f 00 00 jne 0xfcc a: 83 e2 07 and $0x7,%edx d: 40 38 d6 cmp %dl,%sil 10: 41 0f 9e c1 setle %r9b 14: 40 84 f6 test %sil,%sil 17: 0f 95 c2 setne %dl 1a: 41 84 d1 test %dl,%r9b 1d: 0f 85 a9 0f 00 00 jne 0xfcc 23: 41 8b 7c 24 14 mov 0x14(%r12),%edi 28: 31 d2 xor %edx,%edx * 2a: 48 f7 f7 div %rdi <-- trapping instruction 2d: 48 8b 44 24 40 mov 0x40(%rsp),%rax 32: 8d 34 11 lea (%rcx,%rdx,1),%esi 35: 48 c1 e8 03 shr $0x3,%rax 39: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 3d: 0f .byte 0xf 3e: 85 .byte 0x85 3f: 6c insb (%dx),%es:(%rdi)