ip: ffff88804804b588: 00000300 00000000 4804b590 ffff8880 ip: ffff88804804b598: 4804b590 ffff8880 00000000 00000000 ip: ffff88804804b5a8: 00000001 00000000 00000000 00000000 ip: ffff88804804b5b8: 00000000 dead4ead ffffffff 00000000 ip: ffff88804804b5c8: ffffffff ffffffff 92fa5370 ffffffff ip: ffff88804804b5d8: 00000000 00000000 00000000 00000000 ip: ffff88804804b5e8: 8bace580 ffffffff 00000200 00000000 ip: ffff88804804b5f8: 4804b5f8 ffff8880 4804b5f8 ffff8880 ip: ffff88804804b608: 4804b5a0 ffff8880 9a064a20 ffffffff ip: ffff88804804b618: 939dbca0 ffffffff 00000000 00000000 ip: ffff88804804b628: 8bbe1ba0 ffffffff 00000400 00000000 ip: ffff88804804b638: 00000000 00000000 4804b640 ffff8880 ip: ffff88804804b648: 4804b640 ffff8880 00000000 00000000 ip: ffff88804804b658: 00000000 00000000 00000000 00000000 ip: ffff88804804b668: 00000000 00000000 mp: ffff8880447076c8: 00001000 00000001 00000000 00000000 mp: ffff8880447076d8: 00000000 00000000 00000000 00000000 mp: ffff8880447076e8: 00000005 00000000 00000001 00000000 mp: ffff8880447076f8: 4204b000 ffff8880 0000072c 00000000 mp: ffff888044707708: 00000000 dead4ead ffffffff 00000000 mp: ffff888044707718: ffffffff ffffffff 9a1595e0 ffffffff mp: ffff888044707728: 93a30430 ffffffff 00000000 00000000 mp: ffff888044707738: 8beae4a0 ffffffff 00000300 00000000 mp: ffff888044707748: 44707748 ffff8880 44707748 ffff8880 mp: ffff888044707758: 010812c0 ffffea00 41a20000 ffff8880 mp: ffff888044707768: 00001000 00000000 00000001 00000000 mp: ffff888044707778: 00000000 00000000 Locker's tblock: ffffc900013a9000: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a9010: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a9020: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a9030: 00000000 dead4ead ffffffff 00000000 Locker's tblock: ffffc900013a9040: ffffffff ffffffff 9a1597e0 ffffffff Locker's tblock: ffffc900013a9050: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a9060: 8beaf960 ffffffff 00000300 00000000 Locker's tblock: ffffc900013a9070: 013a9070 ffffc900 013a9070 ffffc900 Locker's tblock: ffffc900013a9080: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a9090: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a90a0: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a90b0: 00000000 dead4ead ffffffff 00000000 Locker's tblock: ffffc900013a90c0: ffffffff ffffffff 9a1597c0 ffffffff Locker's tblock: ffffc900013a90d0: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc900013a90e0: 8beaf920 ffffffff 00000300 00000000 Locker's tblock: ffffc900013a90f0: 013a90f0 ffffc900 013a90f0 ffffc900 Locker's tblock: ffffc900013a9100: 00000000 00000000 00000000 00000000 Tlock: ffffc90001548048: 00010000 80018000 447076c8 ffff8880 Tlock: ffffc90001548058: 4804a8d0 ffff8880 01140000 07002000 Tlock: ffffc90001548068: 00020100 00000000 00000000 00000000 Tlock: ffffc90001548078: 00000000 00000000 00000000 00000000 Tlock: ffffc90001548088: 00000000 00000000 ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:835! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:txLock+0x1c7a/0x1cc0 fs/jfs/jfs_txnmgr.c:835 Code: 48 c7 c6 80 ff ea 8b ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 4c 24 30 6a 00 6a 48 e8 8b d6 49 01 48 83 c4 10 90 <0f> 0b e8 4f 77 6b fe 4c 89 ff 48 c7 c6 60 07 eb 8b e8 c0 fd ce fd RSP: 0018:ffffc9000c32ee00 EFLAGS: 00010286 RAX: 17460489c7938100 RBX: dffffc0000000000 RCX: ffff88801faf24c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000c32ef28 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1c7ce48 R12: 0000000000000010 R13: dffffc0000000000 R14: 1ffff920002a9009 R15: ffffc9000154804a FS: 00007f25c59dc6c0(0000) GS:ffff88808cce8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 0000000012140000 CR4: 0000000000352ef0 Call Trace: xtSplitRoot+0x6d5/0x1010 fs/jfs/jfs_xtree.c:1297 xtSplitUp+0x35b/0x1fc0 fs/jfs/jfs_xtree.c:785 xtInsert+0x452/0xf20 fs/jfs/jfs_xtree.c:608 extAlloc+0xad9/0x1020 fs/jfs/jfs_extent.c:150 jfs_get_block+0x358/0xad0 fs/jfs/inode.c:254 __block_write_begin_int+0x6c6/0x1910 fs/buffer.c:2145 block_write_begin+0x8d/0x120 fs/buffer.c:2256 jfs_write_begin+0x35/0x80 fs/jfs/inode.c:306 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314 generic_file_write_iter+0x14a/0x680 mm/filemap.c:4457 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:686 ksys_pwrite64 fs/read_write.c:793 [inline] __do_sys_pwrite64 fs/read_write.c:801 [inline] __se_sys_pwrite64 fs/read_write.c:798 [inline] __x64_sys_pwrite64+0x199/0x230 fs/read_write.c:798 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f25c4b9aeb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f25c59dc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f25c4e16180 RCX: 00007f25c4b9aeb9 RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000005 RBP: 00007f25c4c08c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000e7c R11: 0000000000000246 R12: 0000000000000000 R13: 00007f25c4e16218 R14: 00007f25c4e16180 R15: 00007ffd8e855a88 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txLock+0x1c7a/0x1cc0 fs/jfs/jfs_txnmgr.c:835 Code: 48 c7 c6 80 ff ea 8b ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 4c 24 30 6a 00 6a 48 e8 8b d6 49 01 48 83 c4 10 90 <0f> 0b e8 4f 77 6b fe 4c 89 ff 48 c7 c6 60 07 eb 8b e8 c0 fd ce fd RSP: 0018:ffffc9000c32ee00 EFLAGS: 00010286 RAX: 17460489c7938100 RBX: dffffc0000000000 RCX: ffff88801faf24c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000c32ef28 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1c7ce48 R12: 0000000000000010 R13: dffffc0000000000 R14: 1ffff920002a9009 R15: ffffc9000154804a FS: 00007f25c59dc6c0(0000) GS:ffff88808cce8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 0000000012140000 CR4: 0000000000352ef0