bisecting fixing commit since c85fb28b6f999db9928b841f63f1beeb3074eeca
building syzkaller on 1880b4a9f394370a7d1fcb5c1cfca0fa1127b463
testing commit c85fb28b6f999db9928b841f63f1beeb3074eeca with gcc (GCC) 8.1.0
kernel signature: a512d59d3d32f24295f4696188aa059d16ffa2b55eb07d5622470be2d0df03fa
all runs: crashed: BUG: unable to handle kernel paging request in diFree
testing current HEAD 659caaf65dc9c7150aa3e80225ec6e66b25ab3ce
testing commit 659caaf65dc9c7150aa3e80225ec6e66b25ab3ce with gcc (GCC) 8.1.0
kernel signature: 7e8e0f701e0a6dc824adcd06c60c9a5d1bf78b6b0058769ccee3b0be29a79b3a
run #0: crashed: BUG: unable to handle kernel paging request in diFree
run #1: crashed: BUG: unable to handle kernel paging request in diFree
run #2: crashed: BUG: unable to handle kernel paging request in diFree
run #3: crashed: BUG: unable to handle kernel paging request in diFree
run #4: crashed: BUG: sleeping function called from invalid context in sta_info_move_state
run #5: crashed: BUG: unable to handle kernel paging request in diFree
run #6: crashed: BUG: unable to handle kernel paging request in diFree
run #7: crashed: BUG: unable to handle kernel paging request in diFree
run #8: crashed: BUG: unable to handle kernel paging request in diFree
run #9: crashed: BUG: unable to handle kernel paging request in diFree
revisions tested: 2, total time: 15m53.865045908s (build: 9m50.733023486s, test: 5m35.562583793s)
the crash still happens on HEAD
commit msg: Merge tag 'ceph-for-5.10-rc3' of git://github.com/ceph/ceph-client
crash: BUG: unable to handle kernel paging request in diFree
ERROR: (device loop2): xtSearch: XT_GETPAGE: xtree page corrupt
BUG: unable to handle page fault for address: ffffffffffffff80
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 468d067 P4D 468d067 PUD 468f067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 8323 Comm: syz-executor.2 Not tainted 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:diFree+0x45/0x11a0 fs/jfs/jfs_imap.c:853
Code: 04 25 28 00 00 00 48 89 84 24 c8 00 00 00 31 c0 48 8b 47 28 4c 89 ea 48 8b 80 78 06 00 00 48 c1 ea 0c 48 89 14 24 48 8b 70 28 <4c> 8b 66 80 48 89 74 24 10 41 39 54 24 04 0f 8e 25 0b 00 00 48 8b
RSP: 0018:ffffc90002807c38 EFLAGS: 00010246
RAX: ffff88811f9a7a00 RBX: ffff8881103514b0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881103514b0
RBP: ffff888110351678 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff83957b60
R13: 0000000000000001 R14: ffff8881103514b0 R15: ffff888102778100
FS:  00007f2335b17700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff80 CR3: 000000011f98e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 jfs_evict_inode+0xde/0x110 fs/jfs/inode.c:154
 evict+0xc8/0x190 fs/inode.c:578
 jfs_mount+0xfd/0x1b0 fs/jfs/jfs_mount.c:210
 jfs_fill_super+0x174/0x2c0 fs/jfs/super.c:562
 mount_bdev+0x183/0x1b0 fs/super.c:1419
 legacy_get_tree+0x28/0x50 fs/fs_context.c:592
 vfs_get_tree+0x1d/0xb0 fs/super.c:1549
 do_new_mount fs/namespace.c:2875 [inline]
 path_mount+0x6f7/0xa70 fs/namespace.c:3205
 do_mount+0x70/0x90 fs/namespace.c:3218
 __do_sys_mount fs/namespace.c:3426 [inline]
 __se_sys_mount fs/namespace.c:3403 [inline]
 __x64_sys_mount+0xbf/0xe0 fs/namespace.c:3403
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x46087a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f2335b16a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2335b16b20 RCX: 000000000046087a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f2335b16ae0
RBP: 00007f2335b16ae0 R08: 00007f2335b16b20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020000040
Modules linked in:
CR2: ffffffffffffff80
---[ end trace 6b45d3a643aef03a ]---
RIP: 0010:diFree+0x45/0x11a0 fs/jfs/jfs_imap.c:853
Code: 04 25 28 00 00 00 48 89 84 24 c8 00 00 00 31 c0 48 8b 47 28 4c 89 ea 48 8b 80 78 06 00 00 48 c1 ea 0c 48 89 14 24 48 8b 70 28 <4c> 8b 66 80 48 89 74 24 10 41 39 54 24 04 0f 8e 25 0b 00 00 48 8b
RSP: 0018:ffffc90002807c38 EFLAGS: 00010246
RAX: ffff88811f9a7a00 RBX: ffff8881103514b0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881103514b0
RBP: ffff888110351678 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff83957b60
R13: 0000000000000001 R14: ffff8881103514b0 R15: ffff888102778100
FS:  00007f2335b17700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff80 CR3: 000000011f98e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400