bisecting cause commit starting from 9ff50bf2f2ff5fab01cac26d8eed21a89308e6ef building syzkaller on b599f2fcc734e2183016a340d4f6fc2891d8e41f testing commit 9ff50bf2f2ff5fab01cac26d8eed21a89308e6ef compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: c2a3f8a797fdc31af09d31ecd37c00e62ba928853752611e9ec9431113c14f85 all runs: crashed: WARNING: the mand mount option is being deprecated and 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: eaab50170f966c8b3eb39852b91e95d9bc7e454d96827a490e5a435720d1ffbe all runs: OK # git bisect start 9ff50bf2f2ff5fab01cac26d8eed21a89308e6ef 62fb9874f5da54fdb243003b386128037319b219 Bisecting: 7890 revisions left to test after this (roughly 13 steps) [71bd9341011f626d692aabe024f099820f02c497] Merge branch 'akpm' (patches from Andrew) testing commit 71bd9341011f626d692aabe024f099820f02c497 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 8316ded91205063695409b378ea1d613a96453d43e6ca5bdd08e822275fbb948 run #0: basic kernel testing failed: possible deadlock in fs_reclaim_acquire 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 good 71bd9341011f626d692aabe024f099820f02c497 Bisecting: 3930 revisions left to test after this (roughly 12 steps) [79160a603bdb51916226caf4a6616cc4e1c58a58] Merge tag 'usb-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb testing commit 79160a603bdb51916226caf4a6616cc4e1c58a58 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 4382b4f283867bcab5b9d1808f2701f511acb1d184275701b9fd45bf5cc652c9 run #0: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #2: boot failed: possible deadlock in fs_reclaim_acquire run #3: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #5: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #8: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #9: boot failed: BUG: sleeping function called from invalid context in stack_depot_save # git bisect skip 79160a603bdb51916226caf4a6616cc4e1c58a58 Bisecting: 3930 revisions left to test after this (roughly 12 steps) [7e0dcfcefecacea33339cfd60facb29cf814a484] counter: microchip-tcb-capture: Add const qualifier for functions_list array testing commit 7e0dcfcefecacea33339cfd60facb29cf814a484 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: c643e9395d8e15ea5317a7748035154f7e78753a362c3cd114de12c0085c2293 all runs: OK # git bisect good 7e0dcfcefecacea33339cfd60facb29cf814a484 Bisecting: 3694 revisions left to test after this (roughly 12 steps) [9cf6fa2458443118b84090aa1bf7a3630b5940e8] mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t * testing commit 9cf6fa2458443118b84090aa1bf7a3630b5940e8 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 9f380cc2d4703c105e0e699956b9ef69da7457df864cc35427c80c0390a4f2f8 run #0: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #2: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #5: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #6: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # git bisect skip 9cf6fa2458443118b84090aa1bf7a3630b5940e8 Bisecting: 3694 revisions left to test after this (roughly 12 steps) [35c32e3095d396c750f5cdfdaa94cba83d9b23c6] cxl/docs: Fix "Title underline too short" warning testing commit 35c32e3095d396c750f5cdfdaa94cba83d9b23c6 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 500d3737da9fe009bf8e1c0b6cc7bfa6028352c1e4b00048add77bc42e9d1379 all runs: OK # git bisect good 35c32e3095d396c750f5cdfdaa94cba83d9b23c6 Bisecting: 3691 revisions left to test after this (roughly 12 steps) [a9cc9c3456551bf78acdd330713cf513816bbdd2] selftest/mremap_test: avoid crash with static build testing commit a9cc9c3456551bf78acdd330713cf513816bbdd2 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: def199d1080aa2b1003d602c6252eb67305ac7877b0c62ce55d4dda82b26b80a run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #3: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #5: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #8: boot failed: possible deadlock in fs_reclaim_acquire run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # git bisect skip a9cc9c3456551bf78acdd330713cf513816bbdd2 Bisecting: 3691 revisions left to test after this (roughly 12 steps) [803f4e1eab7a8938ba3a3c30dd4eb5e9eeef5e63] asm-generic: simplify asm/unaligned.h testing commit 803f4e1eab7a8938ba3a3c30dd4eb5e9eeef5e63 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 5eb38c97d0f3014e965ec52a6747eb60cea5198b5f7048c060782a09f6956ede all runs: OK # git bisect good 803f4e1eab7a8938ba3a3c30dd4eb5e9eeef5e63 Bisecting: 3685 revisions left to test after this (roughly 12 steps) [cec6515abbda4bea11ffa2cd700ce062bc07a6d7] powerpc/book3s64/mm: update flush_tlb_range to flush page walk cache testing commit cec6515abbda4bea11ffa2cd700ce062bc07a6d7 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 397c281ca2a48753dc81dba097acd21bde4db4ad5c340b9b022e92098879862a run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #2: boot failed: possible deadlock in get_page_from_freelist run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #4: boot failed: possible deadlock in get_page_from_freelist run #5: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #6: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #9: boot failed: possible deadlock in fs_reclaim_acquire # git bisect skip cec6515abbda4bea11ffa2cd700ce062bc07a6d7 Bisecting: 3685 revisions left to test after this (roughly 12 steps) [3049e974a7c7cfa0c15fb807f4a3e75b2ab8517a] lockd: Update the NLMv4 FREE_ALL arguments decoder to use struct xdr_stream testing commit 3049e974a7c7cfa0c15fb807f4a3e75b2ab8517a compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: bb223201ac897017daa439fce824fb77b8176fb8df0580f25852ac0a163c0e47 all runs: OK # git bisect good 3049e974a7c7cfa0c15fb807f4a3e75b2ab8517a Bisecting: 3654 revisions left to test after this (roughly 12 steps) [de26fb41c24d5b92915f4d59ec49e4a16f01dd85] nds32: convert to setup_initial_init_mm() testing commit de26fb41c24d5b92915f4d59ec49e4a16f01dd85 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: b91536c8d322a31f73a3df685bab89d2f4f6acfca7546f2fe7aacc924fcf1d88 run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #1: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #2: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #4: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #5: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #6: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #7: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #9: boot failed: possible deadlock in fs_reclaim_acquire # git bisect skip de26fb41c24d5b92915f4d59ec49e4a16f01dd85 Bisecting: 3654 revisions left to test after this (roughly 12 steps) [e32df79f19c756f072bd517ece65df1efd496f95] mtd: rawnand: Add a helper to find the closest ONFI NV-DDR mode testing commit e32df79f19c756f072bd517ece65df1efd496f95 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 500d3737da9fe009bf8e1c0b6cc7bfa6028352c1e4b00048add77bc42e9d1379 all runs: OK # git bisect good e32df79f19c756f072bd517ece65df1efd496f95 Bisecting: 3643 revisions left to test after this (roughly 12 steps) [22f4e66df79d0a730fcd6c17f3403b5ab8c72ced] dump_stack: add vmlinux build ID to stack traces testing commit 22f4e66df79d0a730fcd6c17f3403b5ab8c72ced compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 698db62da1c4db8461b385fc684f84aa9427c2837115d5d79bc6ba132afdf7ca run #0: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #1: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #2: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #3: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #4: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #5: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) run #6: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #7: boot failed: possible deadlock in get_page_from_freelist run #8: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #9: boot failed: possible deadlock in get_page_from_freelist # git bisect skip 22f4e66df79d0a730fcd6c17f3403b5ab8c72ced Bisecting: 3643 revisions left to test after this (roughly 12 steps) [32424902331b35f032fd6152bd4e6e1180329e7d] scsi: ufs: core: Remove repeated word in comment testing commit 32424902331b35f032fd6152bd4e6e1180329e7d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: fdfa28874cb69f537c58abee281e18f0231a876929ffc6957d526cd57778d509 all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(NUM,NUM) # git bisect skip 32424902331b35f032fd6152bd4e6e1180329e7d Bisecting: 3643 revisions left to test after this (roughly 12 steps) [2b4bbc6231d789f58676d2ccc42177df163e1c4a] dma-debug: report -EEXIST errors in add_dma_entry testing commit 2b4bbc6231d789f58676d2ccc42177df163e1c4a compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7042115994068ab0f186727be16bd7a11aafb1d6e5de82b2683f9287b5511c31 run #0: basic kernel testing failed: WARNING in kvm_wait run #1: crashed: WARNING in kvm_wait run #2: 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@10.128.1.102:./syz-execprog"] Warning: Permanently added '10.128.1.102' (ECDSA) to the list of known hosts. 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@10.128.1.9:./syz-execprog"] Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts. 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 2b4bbc6231d789f58676d2ccc42177df163e1c4a Bisecting: 0 revisions left to test after this (roughly 0 steps) [bab1622350699dc209db4f50d9ab99e6f6465334] dma-mapping: remove a trailing space testing commit bab1622350699dc209db4f50d9ab99e6f6465334 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7042115994068ab0f186727be16bd7a11aafb1d6e5de82b2683f9287b5511c31 run #0: crashed: 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@10.128.1.52:./syz-execprog"] Warning: Permanently added '10.128.1.52' (ECDSA) to the list of known hosts. run #2: crashed: WARNING in kvm_wait run #3: crashed: WARNING in kvm_wait run #4: crashed: 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 bab1622350699dc209db4f50d9ab99e6f6465334 bab1622350699dc209db4f50d9ab99e6f6465334 is the first bad commit commit bab1622350699dc209db4f50d9ab99e6f6465334 Author: Zhen Lei Date: Tue Jun 8 15:52:19 2021 +0800 dma-mapping: remove a trailing space Signed-off-by: Zhen Lei Signed-off-by: Christoph Hellwig kernel/dma/coherent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) parent commit a7f3d3d3600c8ed119eb0d2483de0062ce2e3707 wasn't tested testing commit a7f3d3d3600c8ed119eb0d2483de0062ce2e3707 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 7042115994068ab0f186727be16bd7a11aafb1d6e5de82b2683f9287b5511c31 culprit signature: 7042115994068ab0f186727be16bd7a11aafb1d6e5de82b2683f9287b5511c31 parent signature: 7042115994068ab0f186727be16bd7a11aafb1d6e5de82b2683f9287b5511c31 revisions tested: 17, total time: 4h44m47.019371804s (build: 2h0m50.320846949s, test: 2h40m58.308401176s) first bad commit: bab1622350699dc209db4f50d9ab99e6f6465334 dma-mapping: remove a trailing space recipients (to): ["hch@lst.de" "hch@lst.de" "iommu@lists.linux-foundation.org" "m.szyprowski@samsung.com" "thunder.leizhen@huawei.com"] recipients (cc): ["linux-kernel@vger.kernel.org" "robin.murphy@arm.com"] crash: WARNING in kvm_wait ------------[ cut here ]------------ raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 0 PID: 8780 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: 8780 Comm: syz-executor.4 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 59 6d c1 ff 80 3d e4 4e e7 03 00 74 01 c3 48 c7 c7 c0 e1 8a 88 c6 05 d3 4e e7 03 01 e8 4e 6c 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:ffffc900017af9e0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888149d25040 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff88dd5340 RDI: fffff520002f5f2e RBP: 0000000000000200 R08: 0000000000000001 R09: ffff8880ba04c1a7 R10: ffffed1017409834 R11: 0000000000000001 R12: 0000000000000003 R13: ffffed10293a4a08 R14: 0000000000000001 R15: ffff8880ba051ec0 FS: 00000000017a9400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000017ba888 CR3: 0000000010579000 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] ext4_lock_group fs/ext4/ext4.h:3383 [inline] __ext4_new_inode+0x2db3/0x44d0 fs/ext4/ialloc.c:1188 ext4_mkdir+0x2aa/0x930 fs/ext4/namei.c:2804 vfs_mkdir+0x179/0x2e0 fs/namei.c:3817 do_mkdirat+0x20c/0x280 fs/namei.c:3842 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4656f7 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 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:00007ffc3e2001d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc3e200270 RCX: 00000000004656f7 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffc3e200270 RBP: 00007ffc3e20024c R08: 0000000000000000 R09: 0000000000000005 R10: 00007ffc3e1fff75 R11: 0000000000000206 R12: 0000000000000032 R13: 0000000000023b2f R14: 0000000000000002 R15: 00007ffc3e2002b0