audit: type=1800 audit(1674416536.272:42): pid=18107 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="loop2" ino=7 res=0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18107 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:lbmStartIO+0x12b/0x480 fs/jfs/jfs_logmgr.c:2143 Code: c1 ea 03 80 3c 02 00 0f 85 f5 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 20 49 8d bd e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ef 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 67 RSP: 0018:ffff88804aa772f8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888096fbf700 RCX: 0000000000000003 RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 RBP: ffff8880b3001e80 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809483c900 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 00007fb2a1ad2700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac9003a018 CR3: 000000009641a000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lbmWrite+0x27b/0x3a0 fs/jfs/jfs_logmgr.c:2092 lmGCwrite+0x3f2/0x4e0 fs/jfs/jfs_logmgr.c:806 lmGroupCommit+0x2a4/0x770 fs/jfs/jfs_logmgr.c:708 txCommit+0xaab/0x39e0 fs/jfs/jfs_txnmgr.c:1313 jfs_commit_inode+0x24e/0x3d0 fs/jfs/inode.c:120 jfs_fsync+0x125/0x210 fs/jfs/file.c:50 vfs_fsync_range+0x13a/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2750 [inline] generic_file_write_iter+0x4be/0x730 mm/filemap.c:3327 call_write_iter include/linux/fs.h:1821 [inline] do_iter_readv_writev+0x668/0x790 fs/read_write.c:681 do_iter_write+0x182/0x5d0 fs/read_write.c:960 vfs_iter_write+0x70/0xa0 fs/read_write.c:973 iter_file_splice_write+0x60d/0xbb0 fs/splice.c:750 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1025 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb2a35600c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007fb2a1ad2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fb2a367ff80 RCX: 00007fb2a35600c9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007fb2a35bbae9 R08: 0000000000000000 R09: 0000000000000000 R10: 000080001d00c0c1 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe688c183f R14: 00007fb2a1ad2300 R15: 0000000000022000 Modules linked in: ---[ end trace 1edede1acbec2f4c ]--- RIP: 0010:lbmStartIO+0x12b/0x480 fs/jfs/jfs_logmgr.c:2143 Code: c1 ea 03 80 3c 02 00 0f 85 f5 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 20 49 8d bd e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ef 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 67 RSP: 0018:ffff88804aa772f8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888096fbf700 RCX: 0000000000000003 RDX: 000000000000001c RSI: ffffffff835f37ea RDI: 00000000000000e0 RBP: ffff8880b3001e80 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809483c900 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 00007fb2a1ad2700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac9003a018 CR3: 000000009641a000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 ea 03 shr $0x3,%edx 3: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 7: 0f 85 f5 02 00 00 jne 0x302 d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 14: fc ff df 17: 4d 8b 6c 24 20 mov 0x20(%r12),%r13 1c: 49 8d bd e0 00 00 00 lea 0xe0(%r13),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 ef 02 00 00 jne 0x323 34: 4d 8b ad e0 00 00 00 mov 0xe0(%r13),%r13 3b: 4d 39 ee cmp %r13,%r14 3e: 74 67 je 0xa7