bisecting cause commit starting from d1d2220c7f39d0fca302c4ba6cca4ede01660a2b building syzkaller on 54289b0835634ca07a8117613c48b73e9e647d13 testing commit d1d2220c7f39d0fca302c4ba6cca4ede01660a2b with gcc (GCC) 8.1.0 kernel signature: 4e3339e3fb113a8e0cc28b148dbb0b950ef858e0d24ac113c0bfe771aa899877 all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0 kernel signature: 3b7a92159621eb909d9c316cb51f66adf8479c2a96a0a39ec235d5b40fbaae12 all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0 kernel signature: 5166c69f0f604a507fee789ba295dc0e3b8af6766f9cd0a63ae35f418082ca4d all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0 kernel signature: e5731df1581147814b1f01d05138e2d27fe338406f29e778c81299834e1cd68a all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0 kernel signature: e1d13102d4426ac9e2516e99f33d4ae5f96603eecc9920f8547f17a1c020e80c all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: bd56319703e48108a0a05f4fd4f94e26fceb13058ee307a21ba2e79cdfd9fb3e all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: 2805598ca83ba8b82df46a1bc28830800c3d39a2cc3e52d1e324721c5593d4ee all runs: OK # git bisect start 219d54332a09e8d8741c1e1982f5eae56099de85 4d856f72c10ecb060868ed10ff1b1453943fc6c8 Bisecting: 7882 revisions left to test after this (roughly 13 steps) [a9f8b38a071b468276a243ea3ea5a0636e848cf2] Merge tag 'for-linus-5.4-1' of git://github.com/cminyard/linux-ipmi testing commit a9f8b38a071b468276a243ea3ea5a0636e848cf2 with gcc (GCC) 8.1.0 kernel signature: 40612c44ac882126bf8b355fe75f0f083b19b297b24d649d0fec44da0339b0c3 all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! # git bisect bad a9f8b38a071b468276a243ea3ea5a0636e848cf2 Bisecting: 3920 revisions left to test after this (roughly 12 steps) [fe38bd6862074c0a2b9be7f31f043aaa70b2af5f] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm testing commit fe38bd6862074c0a2b9be7f31f043aaa70b2af5f with gcc (GCC) 8.1.0 kernel signature: 2987491a27ffc444c6697df5d8fb29c7329ec17cc62e7d5779ba61a93fcf29a0 all runs: OK # git bisect good fe38bd6862074c0a2b9be7f31f043aaa70b2af5f Bisecting: 1962 revisions left to test after this (roughly 11 steps) [069841ef8293697e951c34f9a45601b77fb541d7] Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue testing commit 069841ef8293697e951c34f9a45601b77fb541d7 with gcc (GCC) 8.1.0 kernel signature: b7b3d3f07949c5575cc11abdc50edbf79f1f49183ad499bf83412ab5e1bed71b all runs: OK # git bisect good 069841ef8293697e951c34f9a45601b77fb541d7 Bisecting: 939 revisions left to test after this (roughly 10 steps) [6cfae0c26b21dce323fe8799b66cf4bc996e3565] Merge tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit 6cfae0c26b21dce323fe8799b66cf4bc996e3565 with gcc (GCC) 8.1.0 kernel signature: c61d81e9c5a6d05969ddb5c5ccd40e249baa59e3bb545c925254c0ef30f23a35 all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! # git bisect bad 6cfae0c26b21dce323fe8799b66cf4bc996e3565 Bisecting: 564 revisions left to test after this (roughly 9 steps) [3fb73eddba106ad2a265a5c5c29d14b0ed6aaee1] Staging: gasket: Use temporaries to reduce line length. testing commit 3fb73eddba106ad2a265a5c5c29d14b0ed6aaee1 with gcc (GCC) 8.1.0 kernel signature: 2459d3628c14a5cb845b426dbc42f9447ece50f0599d1ecfc85e9ab9516d3050 all runs: crashed: kernel BUG at fs/erofs/inode.c:LINE! # git bisect bad 3fb73eddba106ad2a265a5c5c29d14b0ed6aaee1 Bisecting: 186 revisions left to test after this (roughly 8 steps) [6aed51d8912460cab375f7fc4ea834851e107b7a] Merge tag 'iio-for-5.4a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next testing commit 6aed51d8912460cab375f7fc4ea834851e107b7a with gcc (GCC) 8.1.0 kernel signature: 9c5693e0fee0194b0b4feb278dee84ad9f9c71f57b7462f74c54ce1c926aad3e all runs: OK # git bisect good 6aed51d8912460cab375f7fc4ea834851e107b7a Bisecting: 93 revisions left to test after this (roughly 7 steps) [20738057210365bbcd8a718c04ded6c93a262b95] staging: rts5208: Fix checkpath warning testing commit 20738057210365bbcd8a718c04ded6c93a262b95 with gcc (GCC) 8.1.0 kernel signature: 292ac7c56217ba59cc827c40df42d42b732a31002e09e0fd4df401acb48c9aeb run #0: crashed: kernel BUG at fs/erofs/inode.c:LINE! run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 20738057210365bbcd8a718c04ded6c93a262b95 Bisecting: 46 revisions left to test after this (roughly 6 steps) [1327d35ac3c187b3c1ae650d90400f8fe5e41b94] staging: kpc2000: kpc2000_i2c: Fix different address spaces warnings testing commit 1327d35ac3c187b3c1ae650d90400f8fe5e41b94 with gcc (GCC) 8.1.0 kernel signature: 7d76e869f4814b64aa0e2d0201cc031239df192f3cfea2a5848090d4f6448df9 run #0: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #1: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #2: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 1327d35ac3c187b3c1ae650d90400f8fe5e41b94 Bisecting: 22 revisions left to test after this (roughly 5 steps) [1548547e1d82532db70a75b9635427a727cd5590] staging: gasket: apex: Make structure apex_desc constant testing commit 1548547e1d82532db70a75b9635427a727cd5590 with gcc (GCC) 8.1.0 kernel signature: 25b0859a3bd536c61a599704722b489d27451789e3d914f16e6e4e8752fd7e93 all runs: OK # git bisect good 1548547e1d82532db70a75b9635427a727cd5590 Bisecting: 11 revisions left to test after this (roughly 4 steps) [c6d6832ce3980a25d2dcbb4ee6758fa9e0653500] Merge 5.3-rc5 into staging-next testing commit c6d6832ce3980a25d2dcbb4ee6758fa9e0653500 with gcc (GCC) 8.1.0 kernel signature: 09047416019d3ed8aafca1f80afa047ca81e7fd11952229e264f195c1573eca0 run #0: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #1: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad c6d6832ce3980a25d2dcbb4ee6758fa9e0653500 Bisecting: 5 revisions left to test after this (roughly 3 steps) [ff784a78af11712c7fa97c292be5390e45b50639] staging: erofs: correct all misused ENOTSUPP testing commit ff784a78af11712c7fa97c292be5390e45b50639 with gcc (GCC) 8.1.0 kernel signature: ad07e3337b91e1d9273b40814f932851f830c1cac24f9fdf99c5cf1177b2e6d0 run #0: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #1: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad ff784a78af11712c7fa97c292be5390e45b50639 Bisecting: 2 revisions left to test after this (roughly 1 step) [d247ceda6ae65968bda1bf7a26b54a257a414c7a] staging: comedi: usbduxsigma: remove redundant assignment to variable fx2delay testing commit d247ceda6ae65968bda1bf7a26b54a257a414c7a with gcc (GCC) 8.1.0 kernel signature: 212f78d8f861f1e64c3773251323307eae1116c5e99d78cd8b27096e68d6eb7e all runs: OK # git bisect good d247ceda6ae65968bda1bf7a26b54a257a414c7a Bisecting: 0 revisions left to test after this (roughly 1 step) [382329a9d8553a98418a6f6e3425f0c288837897] staging: erofs: differentiate unsupported on-disk format testing commit 382329a9d8553a98418a6f6e3425f0c288837897 with gcc (GCC) 8.1.0 kernel signature: d62959557e328131b0fb45a7df860585dd64cde3b530faec69a815632bdd4789 run #0: crashed: kernel BUG at drivers/staging/erofs/inode.c:LINE! run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 382329a9d8553a98418a6f6e3425f0c288837897 Bisecting: 0 revisions left to test after this (roughly 0 steps) [a6b9b1d5eae61a68085030e50d56265dec5baa94] staging: erofs: introduce EFSCORRUPTED and more logs testing commit a6b9b1d5eae61a68085030e50d56265dec5baa94 with gcc (GCC) 8.1.0 kernel signature: 1a96ed80b825f16a66a2b4416b43722ada650ff0e135f62dbafc20b2801d9bc3 all runs: OK # git bisect good a6b9b1d5eae61a68085030e50d56265dec5baa94 382329a9d8553a98418a6f6e3425f0c288837897 is the first bad commit commit 382329a9d8553a98418a6f6e3425f0c288837897 Author: Gao Xiang Date: Wed Aug 14 18:37:04 2019 +0800 staging: erofs: differentiate unsupported on-disk format For some specific fields, use EOPNOTSUPP instead of EIO for values which look sane but aren't supported right now. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190814103705.60698-2-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman drivers/staging/erofs/inode.c | 4 ++-- drivers/staging/erofs/zmap.c | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) culprit signature: d62959557e328131b0fb45a7df860585dd64cde3b530faec69a815632bdd4789 parent signature: 1a96ed80b825f16a66a2b4416b43722ada650ff0e135f62dbafc20b2801d9bc3 revisions tested: 21, total time: 4h55m16.17358322s (build: 2h28m27.467847739s, test: 2h24m12.475075629s) first bad commit: 382329a9d8553a98418a6f6e3425f0c288837897 staging: erofs: differentiate unsupported on-disk format recipients (to): ["gaoxiang25@huawei.com" "gregkh@linuxfoundation.org" "yuchao0@huawei.com"] recipients (cc): [] crash: kernel BUG at drivers/staging/erofs/inode.c:LINE! erofs: root inode @ nid 36 erofs: bogus i_mode (0) @ nid 36 ------------[ cut here ]------------ kernel BUG at drivers/staging/erofs/inode.c:110! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 23504 Comm: syz-executor.3 Not tainted 5.3.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:read_inode drivers/staging/erofs/inode.c:110 [inline] RIP: 0010:fill_inode drivers/staging/erofs/inode.c:192 [inline] RIP: 0010:erofs_iget+0x2290/0x2357 drivers/staging/erofs/inode.c:282 Code: 24 d8 48 c1 ea 03 48 c1 e0 2a 0f b6 04 02 84 c0 74 04 2c 01 7e 37 41 0f b7 34 24 48 89 da 48 c7 c7 00 4f 87 88 e8 df 91 99 fb <0f> 0b 48 c7 c7 60 55 ae 8a e8 f2 2a e0 fd 48 8b 7d d0 e8 d9 04 e5 RSP: 0018:ffff888083247bb0 EFLAGS: 00010282 RAX: 0000000000000020 RBX: 0000000000000024 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff890961a8 RDI: ffffffff8c036400 RBP: ffff888083247c10 R08: ffffed1015ce60d9 R09: ffffed1015ce60d9 R10: ffffed1015ce60d8 R11: ffff8880ae7306c7 R12: ffff888075c828f8 R13: ffff888075c82920 R14: ffff88807149d480 R15: ffffea0001c52748 FS: 00007f87bd248700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8d48ad1010 CR3: 0000000098fdc000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: erofs_fill_super+0xcd7/0xf0b drivers/staging/erofs/super.c:449 mount_bdev+0x26f/0x330 fs/super.c:1283 erofs_mount+0x10/0x20 drivers/staging/erofs/super.c:478 legacy_get_tree+0x105/0x200 fs/fs_context.c:661 vfs_get_tree+0x86/0x3c0 fs/super.c:1413 do_new_mount fs/namespace.c:2791 [inline] do_mount+0x11da/0x1b90 fs/namespace.c:3111 ksys_mount+0xba/0xe0 fs/namespace.c:3320 __do_sys_mount fs/namespace.c:3334 [inline] __se_sys_mount fs/namespace.c:3331 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3331 do_syscall_64+0xd0/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x460bca Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 87 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 ba 87 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f87bd247a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f87bd247b20 RCX: 0000000000460bca RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f87bd247ae0 RBP: 00007f87bd247ae0 R08: 00007f87bd247b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 00000000200000c0 Modules linked in: ---[ end trace 3d80f71481f25b2d ]--- RIP: 0010:read_inode drivers/staging/erofs/inode.c:110 [inline] RIP: 0010:fill_inode drivers/staging/erofs/inode.c:192 [inline] RIP: 0010:erofs_iget+0x2290/0x2357 drivers/staging/erofs/inode.c:282 Code: 24 d8 48 c1 ea 03 48 c1 e0 2a 0f b6 04 02 84 c0 74 04 2c 01 7e 37 41 0f b7 34 24 48 89 da 48 c7 c7 00 4f 87 88 e8 df 91 99 fb <0f> 0b 48 c7 c7 60 55 ae 8a e8 f2 2a e0 fd 48 8b 7d d0 e8 d9 04 e5 RSP: 0018:ffff888083247bb0 EFLAGS: 00010282 RAX: 0000000000000020 RBX: 0000000000000024 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff890961a8 RDI: ffffffff8c036400 RBP: ffff888083247c10 R08: ffffed1015ce60d9 R09: ffffed1015ce60d9 R10: ffffed1015ce60d8 R11: ffff8880ae7306c7 R12: ffff888075c828f8 R13: ffff888075c82920 R14: ffff88807149d480 R15: ffffea0001c52748 FS: 00007f87bd248700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001590004 CR3: 0000000098fdc000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400