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[syzbot] [bcachefs?] BUG: unable to handle kernel paging request in bch2_btree_cache_scan (2) | 0 (1) | 2024/11/11 19:43 |
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[syzbot] [bcachefs?] BUG: unable to handle kernel paging request in bch2_btree_cache_scan (2) | 0 (1) | 2024/11/11 19:43 |
BUG: unable to handle page fault for address: ffffe8fffd64d038 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 1ac3f067 P4D 1ac3f067 PUD 1e7ef067 PMD 4f652067 PTE 0 Oops: Oops: 0002 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 79 Comm: kswapd0 Not tainted 6.12.0-syzkaller-01782-gbf9aa14fc523 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:bch2_btree_cache_scan+0xb57/0xed0 fs/bcachefs/btree_cache.c:561 Code: 24 38 0f 85 12 02 00 00 44 21 2a 48 81 c3 38 b6 04 00 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 dc 0a ea fd 48 8b 03 <65> 48 ff 40 38 41 80 3c 2e 00 74 08 4c 89 ff e8 c5 0a ea fd 49 8b RSP: 0018:ffffc90000e373b8 EFLAGS: 00010246 RAX: 0000607fdda4d000 RBX: ffff888057d4b638 RCX: ffffffff8bd25eae RDX: ffff88801f01002c RSI: 0000000000000008 RDI: ffffc90000e37340 RBP: dffffc0000000000 R08: ffffc90000e37347 R09: 1ffff920001c6e68 R10: dffffc0000000000 R11: fffff520001c6e69 R12: 0000000000000003 R13: 00000000fffbffff R14: 1ffff920001c6ed1 R15: ffffc90000e37688 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffe8fffd64d038 CR3: 0000000041c1a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> do_shrink_slab+0x701/0x1160 mm/shrinker.c:437 shrink_slab+0x1093/0x14d0 mm/shrinker.c:664 shrink_one+0x43b/0x850 mm/vmscan.c:4824 shrink_many mm/vmscan.c:4885 [inline] lru_gen_shrink_node mm/vmscan.c:4963 [inline] shrink_node+0x3789/0x3e10 mm/vmscan.c:5943 kswapd_shrink_node mm/vmscan.c:6771 [inline] balance_pgdat mm/vmscan.c:6963 [inline] kswapd+0x1ca9/0x3700 mm/vmscan.c:7232 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Modules linked in: CR2: ffffe8fffd64d038 ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_cache_scan+0xb57/0xed0 fs/bcachefs/btree_cache.c:561 Code: 24 38 0f 85 12 02 00 00 44 21 2a 48 81 c3 38 b6 04 00 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 dc 0a ea fd 48 8b 03 <65> 48 ff 40 38 41 80 3c 2e 00 74 08 4c 89 ff e8 c5 0a ea fd 49 8b RSP: 0018:ffffc90000e373b8 EFLAGS: 00010246 RAX: 0000607fdda4d000 RBX: ffff888057d4b638 RCX: ffffffff8bd25eae RDX: ffff88801f01002c RSI: 0000000000000008 RDI: ffffc90000e37340 RBP: dffffc0000000000 R08: ffffc90000e37347 R09: 1ffff920001c6e68 R10: dffffc0000000000 R11: fffff520001c6e69 R12: 0000000000000003 R13: 00000000fffbffff R14: 1ffff920001c6ed1 R15: ffffc90000e37688 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffe8fffd64d038 CR3: 0000000041c1a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 24 38 and $0x38,%al 2: 0f 85 12 02 00 00 jne 0x21a 8: 44 21 2a and %r13d,(%rdx) b: 48 81 c3 38 b6 04 00 add $0x4b638,%rbx 12: 48 89 d8 mov %rbx,%rax 15: 48 c1 e8 03 shr $0x3,%rax 19: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 1d: 74 08 je 0x27 1f: 48 89 df mov %rbx,%rdi 22: e8 dc 0a ea fd call 0xfdea0b03 27: 48 8b 03 mov (%rbx),%rax * 2a: 65 48 ff 40 38 incq %gs:0x38(%rax) <-- trapping instruction 2f: 41 80 3c 2e 00 cmpb $0x0,(%r14,%rbp,1) 34: 74 08 je 0x3e 36: 4c 89 ff mov %r15,%rdi 39: e8 c5 0a ea fd call 0xfdea0b03 3e: 49 rex.WB 3f: 8b .byte 0x8b
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/11/20 11:17 | upstream | bf9aa14fc523 | 7d02db5a | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/20 11:08 | upstream | bf9aa14fc523 | 7d02db5a | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/18 18:03 | upstream | adc218676eef | e7bb5d6e | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/17 21:17 | upstream | f66d6acccbc0 | cfe3a04a | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/13 06:50 | upstream | 3022e9d00ebe | 62026c85 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/11 03:41 | upstream | a9cda7c0ffed | 6b856513 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/10 22:41 | upstream | a9cda7c0ffed | 6b856513 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/10 02:24 | upstream | da4373fbcf00 | 6b856513 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/09 10:05 | upstream | f1dce1f09380 | 6b856513 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/09 03:19 | upstream | f1dce1f09380 | 6b856513 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/07 19:55 | upstream | ff7afaeca1a1 | 867e44df | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan | |||
2024/11/07 19:33 | upstream | ff7afaeca1a1 | 867e44df | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | BUG: unable to handle kernel paging request in bch2_btree_cache_scan |