bisecting cause commit starting from 4ccc9e2db7ac33f450a1ff6ce158a71e5a81ded9 building syzkaller on c585c7b0ea16dc4326bf5e8f2f00cc6638e2feb1 testing commit 4ccc9e2db7ac33f450a1ff6ce158a71e5a81ded9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 035b470bde7ea5861782b77c6dae79003a06cee9889d9ed5703dc9848aae3226 run #0: crashed: possible deadlock in __loop_clr_fd run #1: crashed: possible deadlock in __loop_clr_fd run #2: crashed: possible deadlock in __loop_clr_fd run #3: crashed: possible deadlock in __loop_clr_fd run #4: crashed: possible deadlock in __loop_clr_fd run #5: crashed: possible deadlock in __loop_clr_fd run #6: crashed: possible deadlock in __loop_clr_fd run #7: crashed: possible deadlock in __loop_clr_fd run #8: crashed: possible deadlock in __loop_clr_fd run #9: crashed: possible deadlock in loop_add run #10: crashed: possible deadlock in __loop_clr_fd run #11: crashed: possible deadlock in __loop_clr_fd run #12: crashed: possible deadlock in __loop_clr_fd run #13: crashed: possible deadlock in loop_add run #14: crashed: possible deadlock in __loop_clr_fd run #15: crashed: possible deadlock in __loop_clr_fd run #16: crashed: possible deadlock in __loop_clr_fd run #17: crashed: possible deadlock in __loop_clr_fd run #18: crashed: possible deadlock in __loop_clr_fd run #19: crashed: possible deadlock in __loop_clr_fd 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: 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@10.128.10.1:./syz-execprog"] Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: crashed: WARNING in kvm_wait 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: OK # 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: 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@10.128.0.85:./syz-execprog"] Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. run #2: crashed: WARNING in kvm_wait run #3: boot failed: WARNING in kvm_wait 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: crashed: 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: crashed: WARNING in kvm_wait run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait 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: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: crashed: WARNING in kvm_wait 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: basic kernel testing failed: WARNING in kvm_wait run #2: basic kernel testing failed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait 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 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: crashed: WARNING: ODEBUG bug in ext4_fill_super run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: boot failed: WARNING in kvm_wait 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 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: crashed: WARNING in kvm_wait run #2: crashed: WARNING: ODEBUG bug in ext4_fill_super run #3: crashed: WARNING in kvm_wait run #4: crashed: WARNING in kvm_wait 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: crashed: 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: 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 in kvm_wait run #5: crashed: WARNING: ODEBUG bug in ext4_fill_super run #6: crashed: 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: 4h35m6.684858673s (build: 2h6m55.418866628s, test: 2h26m13.707367266s) 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 in kvm_wait ------------[ cut here ]------------ raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 0 PID: 19177 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10 Modules linked in: CPU: 0 PID: 19177 Comm: systemd-udevd Not tainted 5.12.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10 Code: 24 48 c7 c7 a0 68 89 88 e8 19 6c c1 ff 80 3d 51 71 e4 03 00 74 01 c3 48 c7 c7 c0 e1 8a 88 c6 05 40 71 e4 03 01 e8 0e 6b c1 ff <0f> 0b c3 48 39 77 10 0f 84 97 00 00 00 66 f7 47 22 f0 ff 74 4b 48 RSP: 0018:ffffc90002e07860 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff888017ae90b8 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff88de6a80 RDI: fffff520005c0efe RBP: 0000000000000200 R08: 0000000000000001 R09: ffff8880ba04c1a7 R10: ffffed1017409834 R11: 0000000000000001 R12: 0000000000000003 R13: ffffed1002f5d217 R14: 0000000000000001 R15: ffff8880ba051f00 FS: 00007fd3ecc3f8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe1d089020 CR3: 000000001cf22000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_wait arch/x86/kernel/kvm.c:860 [inline] kvm_wait+0xc9/0xe0 arch/x86/kernel/kvm.c:837 pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] lockref_get_not_dead+0xb/0x60 lib/lockref.c:211 __legitimize_path+0x69/0x160 fs/namei.c:667 try_to_unlazy+0xe5/0x2b0 fs/namei.c:748 may_lookup fs/namei.c:1653 [inline] link_path_walk.part.0+0x5a0/0x9b0 fs/namei.c:2208 link_path_walk fs/namei.c:2190 [inline] path_lookupat+0x6d/0x660 fs/namei.c:2419 filename_lookup+0x16d/0x500 fs/namei.c:2453 user_path_at include/linux/namei.h:60 [inline] vfs_statx+0xd6/0x2e0 fs/stat.c:195 vfs_fstatat fs/stat.c:217 [inline] vfs_lstat include/linux/fs.h:3240 [inline] __do_sys_newlstat+0x85/0xe0 fs/stat.c:372 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fd3ebab1335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007ffe1d088678 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000555ec115f230 RCX: 00007fd3ebab1335 RDX: 00007ffe1d0886b0 RSI: 00007ffe1d0886b0 RDI: 0000555ec115e230 RBP: 00007ffe1d088770 R08: 00007fd3ebd70198 R09: 0000000000001010 R10: 0000000000000020 R11: 0000000000000246 R12: 0000555ec115e230 R13: 0000555ec115e23c R14: 0000555ec1153125 R15: 0000555ec115312c