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kernel BUG at fs/jfs/jfs_dmap.c:2983!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 5939 Comm: syz.0.4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dbFindLeaf+0x51d/0x520
Code: e9 4c ff ff ff e8 33 b0 80 fe 48 c7 c7 00 e3 c3 8b 48 c7 c6 40 e0 c3 8b ba a7 0b 00 00 48 c7 c1 c0 ed c3 8b e8 24 a2 e8 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57
RSP: 0018:ffffc9000479ef78 EFLAGS: 00010246
RAX: 000000000000002b RBX: 00000000ffffffff RCX: 148ebd5b5a2d9800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffc9000479eca7 R09: 1ffff920008f3d94
R10: dffffc0000000000 R11: fffff520008f3d95 R12: 0000000000000007
R13: 0000000000000060 R14: 000000000000005d R15: 0000000000000155
FS:  00007f0c009ec6c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c009ebfc8 CR3: 0000000027ef4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 dbAllocDmapLev+0x60/0x3c0
 dbAlloc+0x991/0xba0
 extAlloc+0x54a/0xfb0
 jfs_get_block+0x346/0xab0
 __blockdev_direct_IO+0x16ff/0x3490
 jfs_direct_IO+0x119/0x220
 generic_file_direct_write+0x1db/0x3e0
 __generic_file_write_iter+0x11d/0x230
 generic_file_write_iter+0x117/0x550
 do_iter_readv_writev+0x61c/0x8b0
 vfs_writev+0x31a/0x960
 __se_sys_pwritev2+0x179/0x290
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0bffb8ec29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0c009ec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f0bffdd6180 RCX: 00007f0bffb8ec29
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000006
RBP: 00007f0bffc11e41 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000007c00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0bffdd6218 R14: 00007f0bffdd6180 R15: 00007ffe3cab6418
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindLeaf+0x51d/0x520
Code: e9 4c ff ff ff e8 33 b0 80 fe 48 c7 c7 00 e3 c3 8b 48 c7 c6 40 e0 c3 8b ba a7 0b 00 00 48 c7 c1 c0 ed c3 8b e8 24 a2 e8 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57
RSP: 0018:ffffc9000479ef78 EFLAGS: 00010246
RAX: 000000000000002b RBX: 00000000ffffffff RCX: 148ebd5b5a2d9800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffc9000479eca7 R09: 1ffff920008f3d94
R10: dffffc0000000000 R11: fffff520008f3d95 R12: 0000000000000007
R13: 0000000000000060 R14: 000000000000005d R15: 0000000000000155
FS:  00007f0c009ec6c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c009ebfc8 CR3: 0000000027ef4000 CR4: 00000000000006f0
