bisecting fixing commit since a1b977b49b66c75e6c51a515f6700371ae720217 building syzkaller on d32b0bbf2f8cfe548553c4012e2c0f79040d999f testing commit a1b977b49b66c75e6c51a515f6700371ae720217 with gcc (GCC) 8.4.1 20210217 kernel signature: ccfcc83889987c8e46137f10f42044219e34a3342638cfc6fcc5276018aff490 run #0: crashed: kernel BUG in f2fs_evict_inode run #1: crashed: kernel BUG in corrupted run #2: crashed: kernel BUG in f2fs_evict_inode run #3: crashed: kernel BUG in f2fs_evict_inode run #4: crashed: kernel BUG in f2fs_evict_inode run #5: crashed: kernel BUG in corrupted run #6: crashed: kernel BUG in f2fs_evict_inode run #7: crashed: kernel BUG in f2fs_evict_inode run #8: crashed: kernel BUG in corrupted run #9: crashed: kernel BUG in corrupted run #10: crashed: kernel BUG in f2fs_evict_inode run #11: crashed: kernel BUG in f2fs_evict_inode run #12: crashed: kernel BUG in f2fs_evict_inode run #13: crashed: kernel BUG in f2fs_evict_inode run #14: crashed: kernel BUG in f2fs_evict_inode run #15: crashed: kernel BUG in f2fs_evict_inode run #16: crashed: kernel BUG in f2fs_evict_inode run #17: crashed: kernel BUG in f2fs_evict_inode run #18: crashed: kernel BUG in f2fs_evict_inode run #19: crashed: kernel BUG in f2fs_evict_inode testing current HEAD 6b7b0056defc6eb5c87bbe4690ccda547b2891aa testing commit 6b7b0056defc6eb5c87bbe4690ccda547b2891aa with gcc (GCC) 8.4.1 20210217 kernel signature: 6a771c91be4b31884de34e5beb8f4daf61338dd4d01bcbfd0e36c1353ef97f3e run #0: crashed: kernel BUG in f2fs_evict_inode run #1: crashed: kernel BUG in f2fs_evict_inode run #2: crashed: kernel BUG in f2fs_evict_inode run #3: crashed: kernel BUG in f2fs_evict_inode run #4: crashed: kernel BUG in f2fs_evict_inode run #5: crashed: kernel BUG in f2fs_evict_inode run #6: crashed: kernel BUG in f2fs_evict_inode run #7: crashed: kernel BUG in f2fs_evict_inode run #8: crashed: kernel BUG in f2fs_evict_inode run #9: crashed: kernel BUG in corrupted revisions tested: 2, total time: 26m45.534599901s (build: 19m33.928725098s, test: 6m42.826093731s) the crash still happens on HEAD commit msg: Linux 4.19.192 crash: kernel BUG in corrupted IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:706! invalid opcode: 0000 [#1] PREEMPT SMP KASAN ------------[ cut here ]------------ CPU: 1 PID: 7292 Comm: syz-executor.4 Not tainted 4.19.192-syzkaller #0 kernel BUG at fs/f2fs/inode.c:706! Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706 Code: e9 df f8 ff ff 48 8b 7d a0 e8 56 75 a8 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 5f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 53 75 a8 fe e9 1c f8 ff ff 4c 89 f7 e8 46 75 a8 fe e9 2f ieee80211 phy8: Selected rate control algorithm 'minstrel_ht' RSP: 0018:ffff8881d7137910 EFLAGS: 00010202 RAX: 0000000000000142 RBX: ffff8881cef20e00 RCX: 0000000000000001 RDX: 1ffff1103935ce9a RSI: 0000000000000001 RDI: ffff8881d6cb2204 RBP: ffff8881d7137988 R08: 0000000000000000 R09: ffffed103ece473a R10: ffffed103ece473a R11: ffff8881f67239d3 R12: ffff8881c9ae7100 R13: ffff8881d6cb2180 R14: dffffc0000000000 R15: ffff8881cef213b8 FS: 00007faf14be1700(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea9271fd0 CR3: 00000001d7a02004 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: evict+0x29c/0x590 fs/inode.c:559 iput_final fs/inode.c:1555 [inline] iput fs/inode.c:1581 [inline] iput+0x378/0x6b0 fs/inode.c:1567 f2fs_fill_super fs/f2fs/super.c:3064 [inline] f2fs_fill_super+0x4b80/0x70f0 fs/f2fs/super.c:2803 mount_bdev+0x26f/0x330 fs/super.c:1158 f2fs_mount+0x10/0x20 fs/f2fs/super.c:3234 mount_fs+0x7f/0x2b0 fs/super.c:1261 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x376/0x2710 fs/namespace.c:2799 ksys_mount+0xb1/0xd0 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3026 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466d6a 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:00007faf14be0fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466d6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007faf14be1000 RBP: 00007faf14be1040 R08: 00007faf14be1040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007faf14be1000 R15: 00000000200015c0 Modules linked in: ------------[ cut here ]------------ invalid opcode: 0000 [#2] PREEMPT SMP KASAN kernel BUG at fs/f2fs/inode.c:706! CPU: 0 PID: 7306 Comm: syz-executor.0 Tainted: G D 4.19.192-syzkaller #0 ---[ end trace ed42645e5ced42b6 ]--- Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706 Code: e9 df f8 ff ff 48 8b 7d a0 e8 56 75 a8 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 5f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 53 75 a8 fe e9 1c f8 ff ff 4c 89 f7 e8 46 75 a8 fe e9 2f RSP: 0018:ffff8881d7117910 EFLAGS: 00010202 RAX: 0000000000000142 RBX: ffff8881d8a84e40 RCX: 0000000000000001 RDX: 1ffff110393618aa RSI: 0000000000000001 RDI: ffff8881d6806284 RBP: ffff8881d7117988 R08: 0000000000000000 R09: fffff94000ecda96 R10: fffff94000ecda96 R11: ffffea000766d4b7 R12: ffff8881c9b0c180 RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706 R13: ffff8881d6806200 R14: dffffc0000000000 R15: ffff8881d8a853f8 FS: 00007f9913f25700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f256538a000 CR3: 00000001d7b0c001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: evict+0x29c/0x590 fs/inode.c:559 iput_final fs/inode.c:1555 [inline] iput fs/inode.c:1581 [inline] iput+0x378/0x6b0 fs/inode.c:1567 f2fs_fill_super fs/f2fs/super.c:3064 [inline] f2fs_fill_super+0x4b80/0x70f0 fs/f2fs/super.c:2803 mount_bdev+0x26f/0x330 fs/super.c:1158 f2fs_mount+0x10/0x20 fs/f2fs/super.c:3234 mount_fs+0x7f/0x2b0 fs/super.c:1261 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x376/0x2710 fs/namespace.c:2799 ksys_mount+0xb1/0xd0 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3026 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466d6a 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:00007f9913f24fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466d6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f9913f25000 RBP: 00007f9913f25040 R08: 00007f9913f25040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f9913f25000 R15: 00000000200015c0 Modules linked in: IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready invalid opcode: 0000 [#3] PREEMPT SMP KASAN ---[ end trace ed42645e5ced42b7 ]--- CPU: 1 PID: 7358 Comm: syz-executor.3 Tainted: G D 4.19.192-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706 Code: e9 df f8 ff ff 48 8b 7d a0 e8 56 75 a8 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 5f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 53 75 a8 fe e9 1c f8 ff ff 4c 89 f7 e8 46 75 a8 fe e9 2f RSP: 0018:ffff8881dba7f910 EFLAGS: 00010202 RAX: 0000000000000142 RBX: ffff8881db259500 RCX: 0000000000000001 RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706 RDX: 1ffff1103936c2c2 RSI: 0000000000000001 RDI: ffff8881db25c884 RBP: ffff8881dba7f988 R08: 0000000000000000 R09: fffff94000e6c4e6 R10: fffff94000e6c4e6 R11: ffffea0007362737 R12: ffff8881c9b61240 R13: ffff8881db25c800 R14: dffffc0000000000 R15: ffff8881db259ab8 FS: 00007f00150f3700(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff86eb0010 CR3: 00000001d8ee8006 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Code: e9 df f8 ff ff 48 8b 7d a0 e8 56 75 a8 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 5f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 53 75 a8 fe e9 1c f8 ff ff 4c 89 f7 e8 46 75 a8 fe e9 2f DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: evict+0x29c/0x590 fs/inode.c:559 RSP: 0018:ffff8881d7137910 EFLAGS: 00010202 iput_final fs/inode.c:1555 [inline] iput fs/inode.c:1581 [inline] iput+0x378/0x6b0 fs/inode.c:1567 f2fs_fill_super fs/f2fs/super.c:3064 [inline] f2fs_fill_super+0x4b80/0x70f0 fs/f2fs/super.c:2803 RAX: 0000000000000142 RBX: ffff8881cef20e00 RCX: 0000000000000001 mount_bdev+0x26f/0x330 fs/super.c:1158 f2fs_mount+0x10/0x20 fs/f2fs/super.c:3234 mount_fs+0x7f/0x2b0 fs/super.c:1261 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x376/0x2710 fs/namespace.c:2799 RDX: 1ffff1103935ce9a RSI: 0000000000000001 RDI: ffff8881d6cb2204 RBP: ffff8881d7137988 R08: 0000000000000000 R09: ffffed103ece473a ksys_mount+0xb1/0xd0 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3026 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 R10: ffffed103ece473a R11: ffff8881f67239d3 R12: ffff8881c9ae7100 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466d6a 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:00007f00150f2fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466d6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f00150f3000 RBP: 00007f00150f3040 R08: 00007f00150f3040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f00150f3000 R15: 00000000200015c0 Modules linked in: Code: e9 df f8 ff ff 48 8b 7d a0 e8 56 75 a8 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 5f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 53 75 a8 fe e9 1c f8 ff ff 4c 89 f7 e8 46 75 a8 fe e9 2f R13: ffff8881d6cb2180 R14: dffffc0000000000 R15: ffff8881cef213b8 RSP: 0018:ffff8881d7137910 EFLAGS: 00010202 FS: 00007f9913f25700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000 RAX: 0000000000000142 RBX: ffff8881cef20e00 RCX: 0000000000000001 ieee80211 phy9: Selected rate control algorithm 'minstrel_ht' wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RDX: 1ffff1103935ce9a RSI: 0000000000000001 RDI: ffff8881d6cb2204 ieee80211 phy10: Selected rate control algorithm 'minstrel_ht' wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 CR2: 00007ffdcf089f88 CR3: 00000001d7b0c001 CR4: 00000000001606f0 RBP: ffff8881d7137988 R08: 0000000000000000 R09: ffffed103ece473a ieee80211 phy11: Selected rate control algorithm 'minstrel_ht' ---[ end trace ed42645e5ced42b8 ]--- IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready R10: ffffed103ece473a R11: ffff8881f67239d3 R12: ffff8881c9ae7100 IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Code: e9 df f8 ff ff 48 8b 7d a0 e8 56 75 a8 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 5f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 53 75 a8 fe e9 1c f8 ff ff 4c 89 f7 e8 46 75 a8 fe e9 2f DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RSP: 0018:ffff8881d7137910 EFLAGS: 00010202