loop0: detected capacity change from 0 to 32768 overlay: filesystem on ./bus not supported Read error 10 at 0x28000 read_mapping_page failed! bread failed! BUG: unable to handle page fault for address: ffffffff9b3c57c8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD dd3a067 P4D dd3a067 PUD dd3b063 PMD 0 Oops: Oops: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:227 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:__lock_acquire+0x6a5/0xd20 kernel/locking/lockdep.c:5205 Code: c2 00 00 00 4c 89 fe ba 08 00 00 00 e8 a4 25 00 00 45 31 e4 85 c0 0f 84 57 04 00 00 83 3d 42 50 e2 17 00 75 13 48 63 44 24 18 <48> 0f a3 05 03 c1 de 11 0f 83 35 05 00 00 31 c0 48 8b 3c 24 4c 8b RSP: 0018:ffffc9000d5cf040 EFLAGS: 00010046 RAX: 000000003dfc02c4 RBX: 0000000000000002 RCX: ffffffff93200000 RDX: 0000000000000008 RSI: ffff8880007d0b40 RDI: ffff8880007d0000 RBP: ffff8880007d0af0 R08: 0000000000000000 R09: 0000000000080000 R10: 0000000000000000 R11: ffffffff819b6a4f R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880007d0b60 R15: ffff8880007d0b40 FS: 00007fd58bf256c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff9b3c57c8 CR3: 000000003eb2b000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 __wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:105 unlock_metapage fs/jfs/jfs_metapage.c:39 [inline] release_metapage+0x13c/0xac0 fs/jfs/jfs_metapage.c:763 xtTruncate+0xe71/0x2dd0 fs/jfs/jfs_xtree.c:-1 jfs_truncate_nolock+0x2a7/0x340 fs/jfs/inode.c:373 jfs_truncate fs/jfs/inode.c:412 [inline] jfs_write_failed+0x119/0x190 fs/jfs/inode.c:289 jfs_write_begin+0x6f/0x80 fs/jfs/inode.c:301 generic_perform_write+0x2c4/0x910 mm/filemap.c:4103 generic_file_write_iter+0x10f/0x540 mm/filemap.c:4246 aio_write+0x532/0x790 fs/aio.c:1633 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x70a/0x1240 fs/aio.c:2052 __do_sys_io_submit fs/aio.c:2111 [inline] __se_sys_io_submit+0x185/0x2f0 fs/aio.c:2081 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd58b18e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd58bf25038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fd58b3b5fa0 RCX: 00007fd58b18e969 RDX: 0000200000000540 RSI: 0000000000000001 RDI: 00007fd58befc000 RBP: 00007fd58b210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd58b3b5fa0 R15: 00007ffd8c00a9a8 Modules linked in: CR2: ffffffff9b3c57c8 ---[ end trace 0000000000000000 ]--- RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:227 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:__lock_acquire+0x6a5/0xd20 kernel/locking/lockdep.c:5205 Code: c2 00 00 00 4c 89 fe ba 08 00 00 00 e8 a4 25 00 00 45 31 e4 85 c0 0f 84 57 04 00 00 83 3d 42 50 e2 17 00 75 13 48 63 44 24 18 <48> 0f a3 05 03 c1 de 11 0f 83 35 05 00 00 31 c0 48 8b 3c 24 4c 8b RSP: 0018:ffffc9000d5cf040 EFLAGS: 00010046 RAX: 000000003dfc02c4 RBX: 0000000000000002 RCX: ffffffff93200000 RDX: 0000000000000008 RSI: ffff8880007d0b40 RDI: ffff8880007d0000 RBP: ffff8880007d0af0 R08: 0000000000000000 R09: 0000000000080000 R10: 0000000000000000 R11: ffffffff819b6a4f R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880007d0b60 R15: ffff8880007d0b40 FS: 00007fd58bf256c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff9b3c57c8 CR3: 000000003eb2b000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c2 00 00 ret $0x0 3: 00 4c 89 fe add %cl,-0x2(%rcx,%rcx,4) 7: ba 08 00 00 00 mov $0x8,%edx c: e8 a4 25 00 00 call 0x25b5 11: 45 31 e4 xor %r12d,%r12d 14: 85 c0 test %eax,%eax 16: 0f 84 57 04 00 00 je 0x473 1c: 83 3d 42 50 e2 17 00 cmpl $0x0,0x17e25042(%rip) # 0x17e25065 23: 75 13 jne 0x38 25: 48 63 44 24 18 movslq 0x18(%rsp),%rax * 2a: 48 0f a3 05 03 c1 de bt %rax,0x11dec103(%rip) # 0x11dec135 <-- trapping instruction 31: 11 32: 0f 83 35 05 00 00 jae 0x56d 38: 31 c0 xor %eax,%eax 3a: 48 8b 3c 24 mov (%rsp),%rdi 3e: 4c rex.WR 3f: 8b .byte 0x8b