ip: ffff888055c13588: 00000300 00000000 55c13590 ffff8880 ip: ffff888055c13598: 55c13590 ffff8880 00000000 00000000 ip: ffff888055c135a8: 00000001 00000000 00000000 00000000 ip: ffff888055c135b8: 00000000 dead4ead ffffffff 00000000 ip: ffff888055c135c8: ffffffff ffffffff 9323c3d0 ffffffff ip: ffff888055c135d8: 00000000 00000000 00000000 00000000 ip: ffff888055c135e8: 8bcceb80 ffffffff 00000200 00000000 ip: ffff888055c135f8: 55c135f8 ffff8880 55c135f8 ffff8880 ip: ffff888055c13608: 55c135a0 ffff8880 9a2fdfa0 ffffffff ip: ffff888055c13618: 93c72d00 ffffffff 00000000 00000000 ip: ffff888055c13628: 8bde49c0 ffffffff 00000400 00000000 ip: ffff888055c13638: 00000000 00000000 55c13640 ffff8880 ip: ffff888055c13648: 55c13640 ffff8880 00000000 00000000 ip: ffff888055c13658: 00000000 00000000 00000000 00000000 ip: ffff888055c13668: 00000000 00000000 mp: ffff8880003831f0: 00001000 00000004 000041a8 00000000 mp: ffff888000383200: 41163228 ffff8880 00eb9230 ffffc900 mp: ffff888000383210: 00000005 00000000 00000001 00000000 mp: ffff888000383220: 1f0e2000 ffff8880 00000722 00000000 mp: ffff888000383230: 00000000 dead4ead ffffffff 00000000 mp: ffff888000383240: ffffffff ffffffff 9a3f3ca0 ffffffff mp: ffff888000383250: 93cc7b98 ffffffff 00000000 00000000 mp: ffff888000383260: 8c0b65a0 ffffffff 00000300 00000000 mp: ffff888000383270: 00383270 ffff8880 00383270 ffff8880 mp: ffff888000383280: 007c3880 ffffea00 331c8000 ffff8880 mp: ffff888000383290: 00001000 0000d3ec 00000003 00000000 mp: ffff8880003832a0: 41163000 ffff8880 Locker's tblock: ffffc90000eb9000: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb9010: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb9020: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb9030: 00000000 dead4ead ffffffff 00000000 Locker's tblock: ffffc90000eb9040: ffffffff ffffffff 9a3f3ea0 ffffffff Locker's tblock: ffffc90000eb9050: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb9060: 8c0b7a60 ffffffff 00000300 00000000 Locker's tblock: ffffc90000eb9070: 00eb9070 ffffc900 00eb9070 ffffc900 Locker's tblock: ffffc90000eb9080: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb9090: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb90a0: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb90b0: 00000000 dead4ead ffffffff 00000000 Locker's tblock: ffffc90000eb90c0: ffffffff ffffffff 9a3f3e80 ffffffff Locker's tblock: ffffc90000eb90d0: 00000000 00000000 00000000 00000000 Locker's tblock: ffffc90000eb90e0: 8c0b7a20 ffffffff 00000300 00000000 Locker's tblock: ffffc90000eb90f0: 00eb90f0 ffffc900 00eb90f0 ffffc900 Locker's tblock: ffffc90000eb9100: 00000000 00000000 00000000 00000000 Tlock: ffffc90001057120: 00040003 40048884 003831f0 ffff8880 Tlock: ffffc90001057130: 55c11680 ffff8880 01140000 01000008 Tlock: ffffc90001057140: 1f0e2630 ffff8880 00000000 00000000 Tlock: ffffc90001057150: 00000000 00000000 00000000 00000000 Tlock: ffffc90001057160: 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: 5330 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 80 0b 8c 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 fb d4 50 01 48 83 c4 10 90 <0f> 0b e8 6f 3a 65 fe 4c 89 ff 48 c7 c6 60 88 0b 8c e8 60 a4 c7 fd RSP: 0018:ffffc9000f456e00 EFLAGS: 00010286 RAX: 4d0219e1d196da00 RBX: dffffc0000000000 RCX: 0000000000100000 RDX: ffffc90020802000 RSI: 0000000000029d65 RDI: 0000000000029d66 RBP: ffffc9000f456f28 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1cbd624 R12: 0000000000000010 R13: dffffc0000000000 R14: 1ffff9200020ae24 R15: ffffc90001057122 FS: 00007fba3e80a6c0(0000) GS:ffff88808ca51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000068000 CR3: 000000001cd73000 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:2142 block_write_begin+0x8d/0x120 fs/buffer.c:2253 jfs_write_begin+0x35/0x80 fs/jfs/inode.c:306 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4319 generic_file_write_iter+0x14a/0x680 mm/filemap.c:4462 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_pwrite64 fs/read_write.c:795 [inline] __do_sys_pwrite64 fs/read_write.c:803 [inline] __se_sys_pwrite64 fs/read_write.c:800 [inline] __x64_sys_pwrite64+0x199/0x230 fs/read_write.c:800 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fba3d99c799 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:00007fba3e809fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fba3dc16180 RCX: 00007fba3d99c799 RDX: 000000000000fdef RSI: 0000200000000140 RDI: 000000000000000e RBP: 00007fba3da32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008080c61 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fba3dc16218 R14: 00007fba3dc16180 R15: 00007ffced252fb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txLock+0x1c7a/0x1cc0 fs/jfs/jfs_txnmgr.c:835 Code: 48 c7 c6 80 80 0b 8c 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 fb d4 50 01 48 83 c4 10 90 <0f> 0b e8 6f 3a 65 fe 4c 89 ff 48 c7 c6 60 88 0b 8c e8 60 a4 c7 fd RSP: 0018:ffffc9000f456e00 EFLAGS: 00010286 RAX: 4d0219e1d196da00 RBX: dffffc0000000000 RCX: 0000000000100000 RDX: ffffc90020802000 RSI: 0000000000029d65 RDI: 0000000000029d66 RBP: ffffc9000f456f28 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1cbd624 R12: 0000000000000010 R13: dffffc0000000000 R14: 1ffff9200020ae24 R15: ffffc90001057122 FS: 00007fba3e80a6c0(0000) GS:ffff88808ca51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000068000 CR3: 000000001cd73000 CR4: 0000000000352ef0