./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1017345681 <...> DUID 00:04:4f:52:9e:ef:28:bc:79:ad:2a:9e:d1:97:f2:e1:e7:a4 forked to background, child pid 4667 [ 22.137855][ T4668] 8021q: adding VLAN 0 to HW filter on device bond0 [ 22.150177][ T4668] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.172' (ECDSA) to the list of known hosts. execve("./syz-executor1017345681", ["./syz-executor1017345681"], 0x7ffcd8eb2010 /* 10 vars */) = 0 brk(NULL) = 0x555555a5d000 brk(0x555555a5dc40) = 0x555555a5dc40 arch_prctl(ARCH_SET_FS, 0x555555a5d300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1017345681", 4096) = 28 brk(0x555555a7ec40) = 0x555555a7ec40 brk(0x555555a7f000) = 0x555555a7f000 mprotect(0x7f736aa17000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 creat("./file1", 000) = 3 memfd_create("syzkaller", 0) = 4 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7362554000 write(4, "\xb5\x84\x31\x7b\xb6\x84\x31\x7b\xb7\x84\x31\x7b\xb8\x84\x31\x7b\xb9\x84\x31\x7b\xba\x84\x31\x7b\xbb\x84\x31\x7b\xbc\x84\x31\x7b\xbd\x84\x31\x7b\xbe\x84\x31\x7b\xbf\x84\x31\x7b\xc0\x84\x31\x7b\xc1\x84\x31\x7b\xc2\x84\x31\x7b\xc3\x84\x31\x7b\xc4\x84\x31\x7b\xc5\x84\x31\x7b\xc6\x84\x31\x7b\xc7\x84\x31\x7b\xc8\x84\x31\x7b\xc9\x84\x31\x7b\xca\x84\x31\x7b\xcb\x84\x31\x7b\xcc\x84\x31\x7b\xcd\x84\x31\x7b"..., 65536) = 65536 munmap(0x7f7362554000, 65536) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 ioctl(5, LOOP_SET_FD, 4) = 0 close(4) = 0 mkdir("./file1", 0777) = -1 EEXIST (File exists) mount("/dev/loop0", "./file1", "sysv", 0, "\xff\x03") = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = -1 ENOTDIR (Not a directory) ioctl(5, LOOP_CLR_FD) = 0 close(5) = 0 syzkaller login: [ 42.540721][ T4998] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4998 'syz-executor101' [ 42.558111][ T4998] loop0: detected capacity change from 0 to 128 [ 42.570581][ T4998] VFS: Found a Xenix FS (block size = 512) on device loop0 [ 42.585139][ T4998] syz-executor101: attempt to access beyond end of device [ 42.585139][ T4998] loop0: rw=0, sector=8767744, nr_sectors = 1 limit=128 [ 42.599861][ T4998] Buffer I/O error on dev loop0, logical block 8767744, async page read [ 42.608437][ T4998] syz-executor101: attempt to access beyond end of device [ 42.608437][ T4998] loop0: rw=0, sector=13269809, nr_sectors = 1 limit=128 [ 42.622571][ T4998] Buffer I/O error on dev loop0, logical block 13269809, async page read [ 42.631064][ T4998] syz-executor101: attempt to access beyond end of device [ 42.631064][ T4998] loop0: rw=0, sector=1157, nr_sectors = 1 limit=128 [ 42.644745][ T4998] Buffer I/O error on dev loop0, logical block 1157, async page read [ 42.652960][ T4998] syz-executor101: attempt to access beyond end of device [ 42.652960][ T4998] loop0: rw=0, sector=3211264, nr_sectors = 1 limit=128 [ 42.666950][ T4998] Buffer I/O error on dev loop0, logical block 3211264, async page read [ 42.675418][ T4998] syz-executor101: attempt to access beyond end of device [ 42.675418][ T4998] loop0: rw=0, sector=8768635, nr_sectors = 1 limit=128 [ 42.689450][ T4998] Buffer I/O error on dev loop0, logical block 8768635, async page read [ 42.697919][ T4998] syz-executor101: attempt to access beyond end of device [ 42.697919][ T4998] loop0: rw=0, sector=13466417, nr_sectors = 1 limit=128 [ 42.711963][ T4998] Buffer I/O error on dev loop0, logical block 13466417, async page read [ 42.720507][ T4998] syz-executor101: attempt to access beyond end of device [ 42.720507][ T4998] loop0: rw=0, sector=209285, nr_sectors = 1 limit=128 [ 42.734614][ T4998] Buffer I/O error on dev loop0, logical block 209285, async page read [ 42.743707][ T4998] BUG: sleeping function called from invalid context at fs/buffer.c:1380 [ 42.752421][ T4998] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4998, name: syz-executor101 [ 42.761935][ T4998] preempt_count: 1, expected: 0 [ 42.766844][ T4998] RCU nest depth: 0, expected: 0 [ 42.771789][ T4998] 3 locks held by syz-executor101/4998: [ 42.777372][ T4998] #0: ffff888029a64620 (&iint->mutex){+.+.}-{3:3}, at: process_measurement+0x67b/0x1930 [ 42.787305][ T4998] #1: ffff888077a64328 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x153/0x5e0 [ 42.798581][ T4998] #2: ffffffff8cb91498 (pointers_lock){.+.+}-{2:2}, at: get_block+0x16b/0x1580 [ 42.807752][ T4998] Preemption disabled at: [ 42.807764][ T4998] [<0000000000000000>] 0x0 [ 42.816591][ T4998] CPU: 1 PID: 4998 Comm: syz-executor101 Not tainted 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0 [ 42.827018][ T4998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 42.837065][ T4998] Call Trace: [ 42.840341][ T4998] [ 42.843266][ T4998] dump_stack_lvl+0x136/0x150 [ 42.847959][ T4998] __might_resched+0x358/0x580 [ 42.852722][ T4998] __bread_gfp+0x40/0x330 [ 42.857049][ T4998] get_branch+0x2cd/0x640 [ 42.861471][ T4998] get_block+0x188/0x1580 [ 42.865816][ T4998] ? free_branches+0x3d0/0x3d0 [ 42.870590][ T4998] ? folio_create_buffers+0x10b/0x160 [ 42.875966][ T4998] ? lock_downgrade+0x690/0x690 [ 42.880818][ T4998] ? folio_flags.constprop.0+0x53/0x150 [ 42.886371][ T4998] ? zero_user_segments+0x2c9/0x350 [ 42.891600][ T4998] block_read_full_folio+0x41d/0xab0 [ 42.896894][ T4998] ? free_branches+0x3d0/0x3d0 [ 42.901659][ T4998] ? decrypt_bh+0x390/0x390 [ 42.906159][ T4998] ? __xa_clear_mark+0x120/0x120 [ 42.911101][ T4998] ? folio_add_lru+0x449/0x7c0 [ 42.915876][ T4998] ? sysv_bmap+0x30/0x30 [ 42.920154][ T4998] read_pages+0x9fb/0xd40 [ 42.924485][ T4998] ? folio_add_lru+0x47f/0x7c0 [ 42.929245][ T4998] ? folio_flags.constprop.0+0x150/0x150 [ 42.934886][ T4998] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 42.940867][ T4998] ? find_held_lock+0x2d/0x110 [ 42.945628][ T4998] page_cache_ra_unbounded+0x477/0x5e0 [ 42.951088][ T4998] page_cache_ra_order+0x6ec/0xa00 [ 42.956202][ T4998] ? blk_cgroup_congested+0x147/0x2a0 [ 42.961582][ T4998] ondemand_readahead+0x6b3/0x1080 [ 42.966695][ T4998] page_cache_sync_ra+0x1c9/0x200 [ 42.971715][ T4998] filemap_get_pages+0x28d/0x1620 [ 42.976748][ T4998] ? filemap_add_folio+0x1e0/0x1e0 [ 42.981858][ T4998] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 42.987849][ T4998] filemap_read+0x35e/0xc70 [ 42.992364][ T4998] ? filemap_get_pages+0x1620/0x1620 [ 42.997645][ T4998] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 43.003452][ T4998] ? lockdep_hardirqs_on+0x7d/0x100 [ 43.008652][ T4998] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 43.014460][ T4998] ? __stack_depot_save+0x23b/0x510 [ 43.019667][ T4998] generic_file_read_iter+0x3ad/0x5b0 [ 43.025047][ T4998] ? process_measurement+0xd2f/0x1930 [ 43.030504][ T4998] ? ima_file_check+0xba/0x100 [ 43.035284][ T4998] ? path_openat+0x15d3/0x2750 [ 43.040060][ T4998] ? iov_iter_kvec+0x49/0x1c0 [ 43.044756][ T4998] __kernel_read+0x2ca/0x830 [ 43.049546][ T4998] ? __ia32_sys_llseek+0x380/0x380 [ 43.054718][ T4998] ? find_held_lock+0x2d/0x110 [ 43.059501][ T4998] ? __kmem_cache_alloc_node+0x48/0x320 [ 43.065087][ T4998] integrity_kernel_read+0x7f/0xb0 [ 43.070206][ T4998] ? integrity_inode_free+0x310/0x310 [ 43.075610][ T4998] ? kasan_set_track+0x25/0x30 [ 43.080401][ T4998] ima_calc_file_hash_tfm+0x2b3/0x3c0 [ 43.085777][ T4998] ? calc_buffer_shash_tfm+0x2b0/0x2b0 [ 43.091247][ T4998] ? __stack_depot_save+0x23b/0x510 [ 43.096449][ T4998] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 43.102427][ T4998] ? _find_first_zero_bit+0x94/0xb0 [ 43.107621][ T4998] ? lockdep_unlock+0x11b/0x290 [ 43.112479][ T4998] ? lock_sync+0x190/0x190 [ 43.116898][ T4998] ? ima_alloc_tfm+0x214/0x2d0 [ 43.121663][ T4998] ima_calc_file_hash+0x195/0x4a0 [ 43.126695][ T4998] ima_collect_measurement+0x55b/0x670 [ 43.132161][ T4998] ? ima_get_action+0xa0/0xa0 [ 43.136844][ T4998] ? ima_get_cache_status+0x1e0/0x1e0 [ 43.142219][ T4998] process_measurement+0xd2f/0x1930 [ 43.147438][ T4998] ? mmap_violation_check+0x1f0/0x1f0 [ 43.152856][ T4998] ? apparmor_file_open+0x1a9/0xb40 [ 43.158077][ T4998] ? hook_path_mknod+0x6c0/0x6c0 [ 43.163033][ T4998] ? lock_downgrade+0x690/0x690 [ 43.167904][ T4998] ? apparmor_path_chmod+0x30/0x30 [ 43.173024][ T4998] ? spin_bug+0x1c0/0x1c0 [ 43.177369][ T4998] ? apparmor_current_getsecid_subj+0x1fe/0x570 [ 43.183614][ T4998] ima_file_check+0xba/0x100 [ 43.188204][ T4998] ? process_measurement+0x1930/0x1930 [ 43.193663][ T4998] ? may_open+0x1f6/0x420 [ 43.197989][ T4998] path_openat+0x15d3/0x2750 [ 43.202604][ T4998] ? path_lookupat+0x840/0x840 [ 43.207370][ T4998] do_filp_open+0x1ba/0x410 [ 43.211906][ T4998] ? may_open_dev+0xf0/0xf0 [ 43.216430][ T4998] ? find_held_lock+0x2d/0x110 [ 43.221199][ T4998] ? do_raw_spin_lock+0x124/0x2b0 [ 43.226229][ T4998] ? spin_bug+0x1c0/0x1c0 [ 43.230559][ T4998] ? _raw_spin_unlock+0x28/0x40 [ 43.235412][ T4998] ? alloc_fd+0x2e4/0x750 [ 43.239748][ T4998] do_sys_openat2+0x16d/0x4c0 [ 43.244427][ T4998] ? ptrace_stop.part.0+0x60f/0x8e0 [ 43.249638][ T4998] ? build_open_flags+0x720/0x720 [ 43.254666][ T4998] ? ptrace_notify+0xfe/0x140 [ 43.259338][ T4998] ? lock_downgrade+0x690/0x690 [ 43.264194][ T4998] __x64_sys_open+0x11d/0x1c0 [ 43.268874][ T4998] ? do_sys_open+0x150/0x150 [ 43.273491][ T4998] ? _raw_spin_unlock_irq+0x2e/0x50 [ 43.278698][ T4998] ? ptrace_notify+0xfe/0x140 [ 43.283374][ T4998] do_syscall_64+0x39/0xb0 [ 43.287785][ T4998] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 43.293680][ T4998] RIP: 0033:0x7f736a9a0b59 [ 43.298089][ T4998] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 [ 43.317691][ T4998] RSP: 002b:00007ffd829a1458 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 43.326102][ T4998] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f736a9a0b59 [ 43.334064][ T4998] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 [ 43.342025][ T4998] RBP: 00007f736a960190 R08: 0000000000009e5d R09: 0000000000000000 [ 43.349986][ T4998] R10: 00007ffd829a1320 R11: 0000000000000246 R12: 00007f736a960220 [ 43.357948][ T4998] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 43.365926][ T4998] [ 43.371060][ T4998] syz-executor101: attempt to access beyond end of device [ 43.371060][ T4998] loop0: rw=0, sector=8767744, nr_sectors = 1 limit=128 [ 43.385094][ T4998] Buffer I/O error on dev loop0, logical block 8767744, async page read open("./file1", O_RDONLY) = 4 exit_group(0) = ? +++ exited with 0 +++ [ 43.393617][ T4998] syz-executor101: attempt to access beyond end of device [ 43.393617][ T4998] loop0: rw=0, sector=13269809, nr_sectors = 1 limit=128 [ 43.407728][ T4998] Buffer I/O error on dev loop0, logical block 13269809, async page read [ 43.416254][ T4998] syz-executor101: attempt to access beyond end of device [ 43.416254][ T4998] loop0: rw=0, sector=1157, nr_sectors = 1 limit=128 [ 43.429948][ T4998] Buffer I/O error on dev loop0, logical block 1157, async page read [ 43.439474][ T26] audit: type=1800 audit(1687556392.002: