bisecting cause commit starting from 92d00774360dfd4151f15ab9905c643347b9f242 building syzkaller on 6972b10616d785401dea17cec890cca8916424a7 testing commit 92d00774360dfd4151f15ab9905c643347b9f242 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 8776459f46d5631b63690c5ddbe6486c527ef672c969c38bb8e36f79e185a078 run #0: crashed: KASAN: use-after-free Read in bdev_evict_inode run #1: crashed: KASAN: use-after-free Read in bdev_evict_inode run #2: crashed: general protection fault in wb_timer_fn run #3: crashed: KASAN: use-after-free Read in bdev_evict_inode run #4: crashed: general protection fault in wb_timer_fn run #5: crashed: general protection fault in wb_timer_fn run #6: crashed: general protection fault in wb_timer_fn run #7: crashed: KASAN: use-after-free Read in bdev_evict_inode run #8: crashed: KASAN: use-after-free Read in bdev_evict_inode run #9: crashed: KASAN: use-after-free Read in bdev_evict_inode run #10: crashed: general protection fault in wb_timer_fn run #11: crashed: KASAN: use-after-free Read in bdev_evict_inode run #12: crashed: KASAN: use-after-free Read in bdev_evict_inode run #13: crashed: general protection fault in wb_timer_fn run #14: crashed: KASAN: use-after-free Read in bdev_evict_inode run #15: crashed: general protection fault in wb_timer_fn run #16: crashed: KASAN: use-after-free Read in bdev_evict_inode run #17: crashed: KASAN: use-after-free Read in bdev_evict_inode run #18: crashed: general protection fault in wb_timer_fn run #19: crashed: KASAN: use-after-free Read in bdev_evict_inode testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 1cb5111c0f95c1fc7e3896d55db5b53fbce5858f143c657e735c92f7019c7d10 all runs: crashed: possible deadlock in loop_probe testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: f49397d19055b9442e2c2b720108afe8474cea2e340222187afff379ccf6ade1 all runs: OK # git bisect start 62fb9874f5da54fdb243003b386128037319b219 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 Bisecting: 8739 revisions left to test after this (roughly 13 steps) [85f3f17b5db2dd9f8a094a0ddc665555135afd22] Merge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-5.13 testing commit 85f3f17b5db2dd9f8a094a0ddc665555135afd22 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 714cf9b6fe7a618558f7d423d77c11e1f7356ff667a019d2f409379192a0b248 all runs: crashed: possible deadlock in loop_probe # git bisect bad 85f3f17b5db2dd9f8a094a0ddc665555135afd22 Bisecting: 4263 revisions left to test after this (roughly 12 steps) [ca62e9090d229926f43f20291bb44d67897baab7] Merge tag 'regulator-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator testing commit ca62e9090d229926f43f20291bb44d67897baab7 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7acaedd741eb1f2bf8986647e3ea9b22a76db6ed18246b721426aaee187cc1d2 all runs: OK # git bisect good ca62e9090d229926f43f20291bb44d67897baab7 Bisecting: 1907 revisions left to test after this (roughly 11 steps) [68a32ba14177d4a21c4a9a941cf1d7aea86d436f] Merge tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm testing commit 68a32ba14177d4a21c4a9a941cf1d7aea86d436f compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 4282333eaab1bba9872e0229b1dfe7bb3c24b7594fd6d38d20e7c0c71eba2f45 all runs: OK # git bisect good 68a32ba14177d4a21c4a9a941cf1d7aea86d436f Bisecting: 968 revisions left to test after this (roughly 10 steps) [be18cd1fcae2ed7db58d92d20733dfa8aa0a5173] Merge tag 'mmc-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc testing commit be18cd1fcae2ed7db58d92d20733dfa8aa0a5173 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 37807bd3a0a15369dade57caded56f5b06ce904f22283fcdf78e7fd061f5c326 all runs: crashed: possible deadlock in del_gendisk # git bisect bad be18cd1fcae2ed7db58d92d20733dfa8aa0a5173 Bisecting: 473 revisions left to test after this (roughly 9 steps) [fc0586062816559defb14c947319ef8c4c326fb3] Merge tag 'for-5.13/drivers-2021-04-27' of git://git.kernel.dk/linux-block testing commit fc0586062816559defb14c947319ef8c4c326fb3 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: bdcad53c2b9b0bf70184f88b21df9241db1d39267fb4ed0951612987f86f82b4 all runs: crashed: possible deadlock in del_gendisk # git bisect bad fc0586062816559defb14c947319ef8c4c326fb3 Bisecting: 256 revisions left to test after this (roughly 8 steps) [42dec9a936e7696bea1f27d3c5a0068cd9aa95fd] Merge tag 'perf-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 42dec9a936e7696bea1f27d3c5a0068cd9aa95fd compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 87ddaad0f7f01823fd6225d1e55d38229ccb52dd1e8c92356fe2e0ce35e0ac8d all runs: OK # git bisect good 42dec9a936e7696bea1f27d3c5a0068cd9aa95fd Bisecting: 128 revisions left to test after this (roughly 7 steps) [2958a995edc94654df690318df7b9b49e5a3ef88] block/rnbd-clt: Support polling mode for IO latency optimization testing commit 2958a995edc94654df690318df7b9b49e5a3ef88 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 4b39e1e3517997364f3a62b1a04ea2c8cc63726bc1bee210afd6c5aea2ac1faf run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.49:./syz-fuzzer"] Warning: Permanently added '10.128.1.49' (ECDSA) to the list of known hosts. run #4: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.10.14:./syz-execprog"] Warning: Permanently added '10.128.10.14' (ECDSA) to the list of known hosts. run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 2958a995edc94654df690318df7b9b49e5a3ef88 Bisecting: 63 revisions left to test after this (roughly 6 steps) [b60b270b3db617811e593db5d5920ed98e67ce49] swim3: support highmem testing commit b60b270b3db617811e593db5d5920ed98e67ce49 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 18b3b7a22df9ed69c52b0e7809e46efc9c83549e3a5344e8504d1ec135eed95c run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING: ODEBUG bug in ext4_fill_super run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: crashed: WARNING: ODEBUG bug in ext4_fill_super run #4: crashed: WARNING in kvm_wait run #5: crashed: WARNING: ODEBUG bug in ext4_fill_super run #6: crashed: WARNING in kvm_wait run #7: crashed: WARNING: ODEBUG bug in ext4_fill_super run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad b60b270b3db617811e593db5d5920ed98e67ce49 Bisecting: 31 revisions left to test after this (roughly 5 steps) [de5878048e11f1ec44164ebb8994de132074367a] nvmet: remove unnecessary ctrl parameter testing commit de5878048e11f1ec44164ebb8994de132074367a compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7d11d9a6d02f2266607411694ad8bc0221e5d20b8f0faa9dba8f7f71fef3e090 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING: ODEBUG bug in ext4_fill_super run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad de5878048e11f1ec44164ebb8994de132074367a Bisecting: 15 revisions left to test after this (roughly 4 steps) [80755855f808c27c7154937667436f30e47bc820] mtip32xx: use LIST_HEAD() for list_head testing commit 80755855f808c27c7154937667436f30e47bc820 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7fd29ef4eba27ec0eb0bc3996ae3f445499fdc337cb7b83da4d71bfbfde45574 run #0: basic kernel testing failed: failed to copy test binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-fuzzer" "root@10.128.1.125:./syz-fuzzer"]: exit status 1 ssh: connect to host 10.128.1.125 port 22: Connection timed out lost connection run #1: crashed: WARNING: ODEBUG bug in ext4_fill_super run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: crashed: WARNING: ODEBUG bug in ext4_fill_super run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 80755855f808c27c7154937667436f30e47bc820 Bisecting: 7 revisions left to test after this (roughly 3 steps) [f2e7e269a7525317752d472bb48a549780e87d22] md/raid10: pull the code that wait for blocked dev into one function testing commit f2e7e269a7525317752d472bb48a549780e87d22 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: fce983cab21f575ff49836e2906c089c4e972a9ac337a95ed78ca85d689c176d run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait run #4: crashed: WARNING: ODEBUG bug in ext4_fill_super run #5: crashed: WARNING: ODEBUG bug in ext4_fill_super run #6: crashed: WARNING: ODEBUG bug in ext4_fill_super run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad f2e7e269a7525317752d472bb48a549780e87d22 Bisecting: 3 revisions left to test after this (roughly 2 steps) [f66116f7b2138b584b9fa4ddeedb4bcc670f1942] rsxx: remove extraneous 'const' qualifier testing commit f66116f7b2138b584b9fa4ddeedb4bcc670f1942 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 25d696cf0532a9d40c85e45a587e32e1a5a4ab407a566a9ef539008db3e8a7d7 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: basic kernel testing failed: WARNING in kvm_wait run #3: crashed: WARNING: ODEBUG bug in ext4_fill_super run #4: crashed: WARNING in kvm_wait run #5: crashed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad f66116f7b2138b584b9fa4ddeedb4bcc670f1942 Bisecting: 1 revision left to test after this (roughly 1 step) [1987c55139c9ebe1bed48490c49cfe266cd35ac8] s390/dasd: let driver core manage the sysfs attributes testing commit 1987c55139c9ebe1bed48490c49cfe266cd35ac8 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 25d696cf0532a9d40c85e45a587e32e1a5a4ab407a566a9ef539008db3e8a7d7 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: basic kernel testing failed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait run #4: crashed: WARNING: ODEBUG bug in ext4_fill_super run #5: crashed: WARNING: ODEBUG bug in ext4_fill_super run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 1987c55139c9ebe1bed48490c49cfe266cd35ac8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [86f0a011e548774fd8eb952f67bfeb19f3174dd0] s390/dasd: remove dasd_fba_probe() wrapper testing commit 86f0a011e548774fd8eb952f67bfeb19f3174dd0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 25d696cf0532a9d40c85e45a587e32e1a5a4ab407a566a9ef539008db3e8a7d7 run #0: crashed: WARNING in kvm_wait run #1: crashed: WARNING: ODEBUG bug in ext4_fill_super run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.52:./syz-execprog"] Warning: Permanently added '10.128.1.52' (ECDSA) to the list of known hosts. run #4: boot failed: WARNING in kvm_wait run #5: boot failed: WARNING in kvm_wait run #6: boot failed: WARNING in kvm_wait run #7: boot failed: WARNING in kvm_wait run #8: boot failed: WARNING in kvm_wait run #9: boot failed: WARNING in kvm_wait # git bisect bad 86f0a011e548774fd8eb952f67bfeb19f3174dd0 86f0a011e548774fd8eb952f67bfeb19f3174dd0 is the first bad commit commit 86f0a011e548774fd8eb952f67bfeb19f3174dd0 Author: Julian Wiedmann Date: Tue Mar 16 10:45:12 2021 +0100 s390/dasd: remove dasd_fba_probe() wrapper commit e03c5941f904 ("s390/dasd: Remove unused parameter from dasd_generic_probe()") allows us to wire the generic callback up directly, avoiding the additional level of indirection. While at it also remove the forward declaration for the dasd_fba_driver struct, it's no longer needed. Signed-off-by: Julian Wiedmann Reviewed-by: Jan Hoeppner Signed-off-by: Stefan Haberland Link: https://lore.kernel.org/r/20210316094513.2601218-2-sth@linux.ibm.com Signed-off-by: Jens Axboe drivers/s390/block/dasd_fba.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) parent commit 1e28eed17697bcf343c6743f0028cc3b5dd88bf0 wasn't tested testing commit 1e28eed17697bcf343c6743f0028cc3b5dd88bf0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 25d696cf0532a9d40c85e45a587e32e1a5a4ab407a566a9ef539008db3e8a7d7 culprit signature: 25d696cf0532a9d40c85e45a587e32e1a5a4ab407a566a9ef539008db3e8a7d7 parent signature: 25d696cf0532a9d40c85e45a587e32e1a5a4ab407a566a9ef539008db3e8a7d7 revisions tested: 17, total time: 4h24m8.803512069s (build: 1h56m6.797144226s, test: 2h26m10.883455582s) first bad commit: 86f0a011e548774fd8eb952f67bfeb19f3174dd0 s390/dasd: remove dasd_fba_probe() wrapper recipients (to): ["axboe@kernel.dk" "hoeppner@linux.ibm.com" "jwi@linux.ibm.com" "sth@linux.ibm.com"] recipients (cc): [] crash: WARNING: ODEBUG bug in ext4_fill_super ODEBUG: free active (active state 0) object type: timer_list hint: print_daily_error_info+0x0/0x1b0 fs/ext4/super.c:1334 WARNING: CPU: 1 PID: 10155 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 10155 Comm: syz-executor.0 Not tainted 5.12.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd a0 7a de 88 4c 89 ee 48 c7 c7 a0 6e de 88 e8 2d ac 83 04 <0f> 0b 83 05 25 22 bb 08 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000aae7968 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff88de6a80 RDI: fffff5200155cf1f RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba14c1a7 R10: ffffed1017429834 R11: 0000000000000001 R12: ffffffff888cc5a0 R13: ffffffff88de74e0 R14: ffffffff8159dc50 R15: dffffc0000000000 FS: 00007fa6ccdfb700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe522baf98 CR3: 0000000021931000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:987 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018 slab_free_hook mm/slub.c:1554 [inline] slab_free_freelist_hook+0x147/0x210 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kfree+0xe5/0x7f0 mm/slub.c:4213 ext4_fill_super+0x742/0xbac0 fs/ext4/super.c:5182 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: 0033:0x467b0a 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:00007fa6ccdfafa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000467b0a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fa6ccdfb000 RBP: 00007fa6ccdfb040 R08: 00007fa6ccdfb040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fa6ccdfb000 R15: 0000000020013a00