bisecting fixing commit since 34816d20f173a90389c8a7e641166d8ea9dce70a building syzkaller on e6b0d3140b98e8456fbd089d584e932e19257d94 testing commit 34816d20f173a90389c8a7e641166d8ea9dce70a with gcc (GCC) 10.2.1 20210217 kernel signature: 509e65a0c333249946868fd4ce178dc7785d6be7afc8f228dc7f56a33427edc5 all runs: crashed: BUG: unable to handle kernel paging request in diFree testing current HEAD d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c testing commit d19cc4bfbff1ae72c3505a00fb8ce0d3fa519e6c with gcc (GCC) 10.2.1 20210217 kernel signature: 9ced1195c973ef927d3b1d586e7ba60f47fc9631f782f93b41f51be43d57490d all runs: crashed: BUG: unable to handle kernel paging request in diFree revisions tested: 2, total time: 19m31.625228571s (build: 12m4.615088236s, test: 6m34.402965866s) the crash still happens on HEAD commit msg: Merge tag 'trace-v5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace crash: BUG: unable to handle kernel paging request in diFree loop3: detected capacity change from 0 to 180 ERROR: (device loop3): 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 a68f067 P4D a68f067 PUD a691067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10172 Comm: syz-executor.3 Not tainted 5.12.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:diFree+0x156/0x3370 fs/jfs/jfs_imap.c:853 Code: 28 48 8d 78 80 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 75 20 00 00 48 8b 44 24 08 <4c> 8b 60 80 4c 89 e8 48 c1 e8 0c 48 89 04 24 48 b8 00 00 00 00 00 RSP: 0018:ffffc9000a37f950 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888022c93c00 RCX: ffffffff8281035e RDX: 1ffffffffffffff0 RSI: 0000000000000008 RDI: ffffffffffffff80 RBP: ffff88802dff0908 R08: 0000000000000000 R09: ffff88802dff090f R10: ffffed1005bfe121 R11: 0000000000000001 R12: ffff88802dff0db8 R13: 0000000000000001 R14: ffffffff88e1b720 R15: ffff88802dff0ce0 FS: 00007f5a9cf17700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffff80 CR3: 0000000013c29000 CR4: 0000000000350ee0 Call Trace: jfs_evict_inode+0x25c/0x310 fs/jfs/inode.c:154 evict+0x296/0x5d0 fs/inode.c:578 jfs_mount+0x1ce/0x320 fs/jfs/jfs_mount.c:211 jfs_fill_super+0x555/0xb10 fs/jfs/super.c:561 mount_bdev+0x2cb/0x3b0 fs/super.c:1367 legacy_get_tree+0xfa/0x1f0 fs/fs_context.c:592 vfs_get_tree+0x7f/0x2c0 fs/super.c:1497 do_new_mount fs/namespace.c:2903 [inline] path_mount+0x7f3/0x1a40 fs/namespace.c:3233 do_mount fs/namespace.c:3246 [inline] __do_sys_mount fs/namespace.c:3454 [inline] __se_sys_mount fs/namespace.c:3431 [inline] __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3431 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466daa Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5a9cf16fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466daa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f5a9cf17000 RBP: 00007f5a9cf17040 R08: 00007f5a9cf17040 R09: 0000000020000000 R10: 0000000000008001 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f5a9cf17000 R15: 0000000020064f00 Modules linked in: CR2: ffffffffffffff80 ---[ end trace 31fd194690688567 ]--- RIP: 0010:diFree+0x156/0x3370 fs/jfs/jfs_imap.c:853 Code: 28 48 8d 78 80 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 75 20 00 00 48 8b 44 24 08 <4c> 8b 60 80 4c 89 e8 48 c1 e8 0c 48 89 04 24 48 b8 00 00 00 00 00 RSP: 0018:ffffc9000a37f950 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888022c93c00 RCX: ffffffff8281035e RDX: 1ffffffffffffff0 RSI: 0000000000000008 RDI: ffffffffffffff80 RBP: ffff88802dff0908 R08: 0000000000000000 R09: ffff88802dff090f R10: ffffed1005bfe121 R11: 0000000000000001 R12: ffff88802dff0db8 R13: 0000000000000001 R14: ffffffff88e1b720 R15: ffff88802dff0ce0 FS: 00007f5a9cf17700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffff80 CR3: 0000000013c29000 CR4: 0000000000350ee0