kasan: GPF could be caused by NULL-ptr deref or user memory access REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 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 loop0): checking transaction log (loop0) general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 8004 Comm: syz-executor.2 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 task: ffff888091f504c0 task.stack: ffff888091e50000 RIP: 0010:write_special_inodes+0xa6/0x170 fs/jfs/jfs_logmgr.c:221 RSP: 0018:ffff888091e57c38 EFLAGS: 00010206 RAX: 0000000000000006 RBX: ffff8880a888de80 RCX: 000000000000001b RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000030 RBP: dffffc0000000000 R08: 0000000000000000 R09: 00000000000406d2 R10: ffff888091f50d70 R11: ffff888091f504c0 R12: ffffffff8168db80 R13: 0000000000000000 R14: ffff8880774e7200 R15: fffffbfff141291e FS: 0000555557149400(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e435000 CR3: 0000000094d74000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lmLogSync+0x389/0x660 fs/jfs/jfs_logmgr.c:958 jfs_syncpt+0x66/0x70 fs/jfs/jfs_logmgr.c:1062 jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:718 __sync_filesystem fs/sync.c:39 [inline] sync_filesystem fs/sync.c:64 [inline] sync_filesystem+0xe2/0x230 fs/sync.c:48 generic_shutdown_super+0x70/0x370 fs/super.c:432 kill_block_super+0x95/0xe0 fs/super.c:1161 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 deactivate_super+0x7f/0xa0 fs/super.c:350 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f00ba7db567 RSP: 002b:00007ffd409d91f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f00ba7db567 RDX: 00007ffd409d92ca RSI: 000000000000000a RDI: 00007ffd409d92c0 RBP: 00007ffd409d92c0 R08: 00000000ffffffff R09: 00007ffd409d9090 R10: 000055555714a903 R11: 0000000000000246 R12: 00007f00ba834b24 R13: 00007ffd409da380 R14: 000055555714a810 R15: 00007ffd409da3c0 Code: 49 8b 7d 30 41 ff d4 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 ab 00 00 00 4c 8b 6b 28 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 88 00 00 00 49 8b 7d 30 41 ff d4 48 8d bb b0 RIP: write_special_inodes+0xa6/0x170 fs/jfs/jfs_logmgr.c:221 RSP: ffff888091e57c38 REISERFS (device loop5): checking transaction log (loop5) REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): using 3.5.x disk format REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. audit: type=1800 audit(1676696426.579:13): pid=9846 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="loop0" ino=2 res=0 REISERFS warning (device loop0): vs-13060 reiserfs_update_sd_size: stat data of object [2 3 0x0 SD] (nlink == 1) not found (pos 0) REISERFS (device loop5): Using r5 hash to sort names REISERFS warning (device loop0): vs-13060 reiserfs_update_sd_size: stat data of object [2 3 0x0 SD] (nlink == 1) not found (pos 0) REISERFS (device loop5): using 3.5.x disk format REISERFS warning (device loop0): vs-13060 reiserfs_update_sd_size: stat data of object [2 3 0x0 SD] (nlink == 1) not found (pos 0) REISERFS (device loop5): Created .reiserfs_priv - reserved for xattr storage. REISERFS warning (device loop0): vs-13060 reiserfs_update_sd_size: stat data of object [2 3 0x0 SD] (nlink == 1) not found (pos 0) ---[ end trace a2a9a018af7a6efe ]--- ---------------- Code disassembly (best guess): 0: 49 8b 7d 30 mov 0x30(%r13),%rdi 4: 41 ff d4 callq *%r12 7: 48 8d 7b 28 lea 0x28(%rbx),%rdi b: 48 89 f8 mov %rdi,%rax e: 48 c1 e8 03 shr $0x3,%rax 12: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 16: 0f 85 ab 00 00 00 jne 0xc7 1c: 4c 8b 6b 28 mov 0x28(%rbx),%r13 20: 49 8d 7d 30 lea 0x30(%r13),%rdi 24: 48 89 f8 mov %rdi,%rax 27: 48 c1 e8 03 shr $0x3,%rax * 2b: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction 2f: 0f 85 88 00 00 00 jne 0xbd 35: 49 8b 7d 30 mov 0x30(%r13),%rdi 39: 41 ff d4 callq *%r12 3c: 48 rex.W 3d: 8d .byte 0x8d 3e: bb .byte 0xbb 3f: b0 .byte 0xb0